Trivia: This is the sequel to "After" (2019).
Suggested correction: This isn't trivia, especially since it stars the main cast of characters and is based on the sequel to the book.
Arguably, EVERYTHING is trivia.
No, anything obvious, common knowledge, or easily seen by viewers is NOT trivia. Also, things unrelated to the film or those involved is not trivia.
The "easily seen by viewers" is a bit of a grey area, because people (well, I) do read trivia listings before seeing a movie just for background info. But I agree that not everything can be trivia - it needs to be broadly of note, although granted that's highly subjective!
Trivia: The scientist Sarah has the video call with is a real theoretical physicist called Clifford Johnson, who's served as a consultant for films and TV shows including Agent Carter, Thor: Ragnarok, Avengers: Infinity War, and Avengers: Endgame.
Trivia: Felix ordered a "Cutty on the rocks" at the restaurant. "Cutty Sark" is a Scotch whisky ("whiskey" in the U.S. and Ireland), meaning it must be manufactured in Scotland. Mobsters (not meant to be referring to Felix) are known for ordering drinks by brand name, such as "Cutty on the rocks", but not "Scotch on the rocks." During U.S. prohibition (1920 - 1933), Cutty Sark became well-known as a bootlegged (illegally trafficked) liquor. (00:20:35)