• ”Pew, pew, pew, pew, pew.” The middle of the battle against the Rev-1 seems like an odd time for Murf to imitate someone complaining about “Star Trek: Discovery”, but he does seem to have things handled.
• ”You talk too much, Mr. Crusher.” Ascensia echoes Captain Picard’s sentiments from “Datalore”.
• We see the incurser weapon embedded in the hull of the USS Voyager A, not dissimilar from the Jem’Hadar torpedo that struck the USS Defiant in “Starship Down”, or the photon torpedo that took a bite of the USS Enterprise in “Such Sweet Sorrow, Part 2”
• Tysess invokes an Andorian deity named Uzaveh, that has nor previously been mentioned on screen, but did originate in the DS9 novel, Paradigm.
• The incurser releases a wave of temporal radiation, which rapidly ages Tysess. Captain Picard’s hand experienced the same fate in “Timescape” when he reaches out to examine a bowl of rapidly rotting fruit.
• Despite his rapid aging, Tysess’ hair remains the same.
• Other characters been prematurely aged include Kirk, Spock, Doctor McCoy, Scotty, and Arlene Galway in “The Deadly Years”; Doctor Pulaski in “Unnatural Selection”; and the half-a-rascal from “Much Ado About Boimler”, but only the right half of him.
• Admiral Jellico calls to inform Admiral Janeway that no help is coming to save the USS Voyager A, because ”The fleet is stretched too far.” This reinforces what has previously been established in “Chain of Command, Part I”, “Chain of Command, Part II”, and “Masquerade”, that Jellico is the absolute worst.
• Though this is the first mention of Starfleet attack omega, or the phoenix triad maneuverers, the Yeager loop was the Nova Squadron cadets in “The First Duty” claimed they were attempting instead of the banned Koolovord starburst.
• As their body degrades, Zero recalls their words to Ion in “Is There in Beauty No Truth?”
• We finally see Dal and Nova Squadron perform the Boothby starburst, which appears to be three ships flying straight ahead, detaching the cockpit sections from the rest of the Nova Flyer, and crashing the rest of the shuttle into whatever object they're pointed towards.
• The starburst is named after Boothby because he was actually a colony creature similar to a Pandorian, who would detach his head and then send the rest of his body to go run into people.