The title plays off Star Trek: The Next Generation, which succeeded TOS in 1987 - the last time that label was used being in PIC Season 3’s opener, “The Next Generation”, with its finale, “The Last Generation”, evoking that as well. Of course, by episode’s end, we see the aptness of the title as a torch is passed for a new frontier.

Relga’s lapdog is likely just a toy breed of targ. I originally thought it might be a variant of the Alfa 177 canine first seen in TOS: “The Enemy Within” as it appears to have the same unicorn horn but it’s the wrong color and the Alfa 177 dog has antennae and no tusks.

As mentioned last episode, a soliton wave in Star Trek is a faster-than-light wave that was thought to have practical applications in warp propulsion or faster than light communications (TNG: “New Ground”), but was also potentially destructive.

As the wave hits the ships, a Klingon is transformed into a DIS-style Klingon, specifically the alien design and white costume of L’Rell in Season 1. An external shot also shows the ship (the Krtas) transformed into a DIS-style Bird of Prey before it collides with another K’Vort-type and is destroyed.

Honus (last seen in LD: “Caves”) is tending bar. T’Ana suggests Sexy Treasure Island to Shaxs, another in their series of erotic holoprograms (they had a black-and-white Bonnie and Clyde one in LD: “Room for Growth” and a Robin Hood one in LD: “I Have No Bones Yet I Must Flee”).

This unnamed cadet is a different one from the younger one we last saw in LD: “Upper Decks”. He’s also wearing glasses, which might indicate he is allergic, like Jim Kirk, to Retinax 5 (ST II).

I honestly don’t know if T’Lyn and Tendi are messing with Mariner or not, but I will dutifully file away that half of all bopples are corbed, and corbopples are foundational elements of artificial gravity. Artificial gravity systems generally rely on generated graviton fields (TNG Technical Manual) and gravity plating.

A Bramble is an actual cocktail, consisting of dry gin, lemon juice, sugar syrup, crème de mûre, crushed ice and finished off with fresh red fruits and a slice of lemon.

In the real world, Boimler and Mariner’s account would sound insane, but this is Starfleet. As Janeway said in VOY: “Deadlock”, “Weird is part of the job.”

This is Ma’ah’s cargo freighter (last seen in LD: “A Farewell to Farms”), instantly recognizable with its brush devil tusks decorating the bow.

Relga’s brothers are revealed to be Bargh and Dorg, the latter being Ma’ah’s former commander whom he killed to gain the captaincy of the IKS Che’Ta’ in LD: “wej Duj” and the former being the head of the Oversight Council who Ma’ah killed in “A Farewell to Farms”. Both deaths were justified, though, with Dorg killed in a proper captain’s challenge and Bargh in self-defense after an attempted backstab.

A Schrödinger possibility field is named after physicist Erwin Schrödinger’s famous thought experiment involving a cat in a box whose state of life or death cannot be determined until the box is opened and the quantum wave function representing the cat collapses into one of the two possible outcomes.

Starfleet says Enterprise is en route. As of LD’s current year of 2382, this would still be the Sovereign-class Enterprise-E, since it would participate in the Battle of the Living Construct in 2384 (PRO: “Supernova”).

The alien researcher is an Ariolo, a centaur-like species that first appeared in ST IV and has made multiple background appearances in LD.

We see Ensign Meredith (last seen in LD: “Upper Decks”) and Ensign Olly (last seen in LD: “Of Gods and Angles”).

“[Mariner] is my cha’DIch’s cha’Dich”, says Malor. A cha’DIch is the title for a Klingon’s “second”, which also holds implications of mentorship.

Carol Freeman’s husband is Admiral Alonzo Freeman, who was on the conference call briefing Cerritos on her mission. petaQ can be translated as “weirdo”. Hu’tegh (untranslated) is a general invective in Klingon.

Boims using the ship’s shields to nudge one BoP into another is actually a pretty cool maneuver.

The first wave turns Cerritos into a Freedom-class, a kit-bash that appeared as part of the wreckage of the Battle of Wolf 359 (TNG: “The Best of Both Worlds, Part II”).

Freeman brings up an interesting point about warping with one nacelle. Traditionally, two nacelles create two balanced, interacting warp fields which can be shaped to maneuver the ship. According to the TNG Tech Manual, experiments in 2269 confirmed that two was the optimum number for power generation and vehicle control. As Tendi says, one nacelle for warp is still possible…but we don’t have time to nerd out about this now.

The Klingon BoP is turned into an ancient Klingon sailing barge, a mythical version of one ferrying dishonored Klingon souls to Gre’thor, the Klingon equivalent of the Norse Hel (VOY: “Barge of the Dead”), as opposed to Sto’vo’kor, the Klingon Valhalla.

Matt and Kimolu, the Cetacean Ops beluga whales, were last seen in LD: “Starbase 80?!”

The next wave turns Cerritos into a Terran Empire variant of the California-class. The Terran Empire is of course from the oft-encountered Mirror Universe (TOS: “Mirror Mirror”, et al.), which we last saw in PRO: “Cracked Mirror”.

Ensign Olly, being a descendant of Zeus (or the alien the Ancient Greeks called Zeus as per TOS: “Who Mourns for Adonais?”), has lightning powers which I hope she finally sees actually are useful.

The proto-Klingons Relga and her crew are turned into resemble to a large degree the same form Worf devolved into in TNG: “Genesis” when affected by Barclay’s Protomorphosis Syndrome.

The next wave turns Cerritos into a Sovereign-class, like Enterprise-E, including of course the bridge design (First Contact), then an Oberth-class (ST III), Galaxy-class (TNG), Miranda-class (ST II), and back to California-class.

The engineer to observe Rutherford’s speed is his nemesis/rival Livik, last seen in LD: “Starbase 80?!”

Cerritos splitting into two quantum possibilities is similar to what happened to Voyager in VOY: “Deadlock”, where a subspace divergent field duplicated the ship and personnel.

Next to Ma’ah on his new bridge are Malor, together with the pet targ that Ma’ah inherited from Dorg (LD: “wej Duj”), and K’Ellara, his would be paramour from LD: “A Farewell to Farms” (voiced by Mary Chieffo in that episode).

Starbase 80’s systems, as stated in the titular episode, hadn’t been updated since the 2260s, which makes it ideal for guarding the newly created quantum portal, much like DS9 guarded the Bajoran wormhole or Jurati’s Borg fleet guards the mysterious fissure of PIC Season 2. Kassia was also last seen in that episode. We see that Anximander and her crew (LD: “Fissure Quest”) made it.

I won’t bother identifying all the personnel shown in the final montage, just point out a few notable things.

Olly is showing off her Kamehameha move in her bunk. One of the players in the poker game is wearing a Zebulon Sisters Chu Chu Dance shirt. The Sisters performed on Cerritos in LD: “Terminal Provocations” but were later banned from performing on active duty starships by Admiral Jellico (LD: “Grounded”).

In engineering, Livek and Meredith are working on what seems to be an even more improved version of the Billups Tubes from LD: “I Have No Bones and I Must Flee”. The Billups Tubes were an “improved” version of the Tucker Tubes (Modern Props 195-290-1, also known as “The Most Important Device in the Universe”, a common sci-fi prop seen in many movies and shows).

In case anyone doesn’t know, that isn’t Badgey, but Goodgey, his good twin (LD: “A Few Badgeys More”), who remained on Cerritos when Badget ascended. Speaking of which, the person being ejected from the portal in Sickbay is O’Connor, who we last saw ascending to a higher plane in LD: “Moist Vessel”. Guess it didn’t take.

“Twaining” is a form of dispute resolution that involves dressing up like Mark Twain in a riverboat holoprogram, last seen in LD: “Old Friends, New Planets”. We see another one of Castro’s salons (LD: “Hear All, Trust Nothing”) but this time they’re lighting a plasma candle - one of which housed the infamous anaphasic “ghost” of TNG: “Sub Rosa”. Which also makes their cheering a bit suspect.

Shaxs always wants to detonate the warp core, but Freeman only allowed it in LD: “The Stars At Night”, which brought him to tears.

And so, farewell Lower Decks, for now. It’s been a gas.