- Actor-Shared Background: Like Goran Vinjić, Garcia Flynn was born in Croatia, though his mother is American. This explains his accent.
- Dueling Works: With DC Comics' Legends of Tomorrow. Notably, that show later added their own historian character after the premiere of this program.
- The episode Space Race both referenced and duelled with Hidden Figures, which was released less than 2 months after this episode.
- Un-Cancelled: An incredibly quick one, as NBC first opted not to give it a second season, and then reversed that decision just three days later for unknown reasons. Naturally, a lot of jokes about time travel were involved. The axe fell on it again in June 2018, but it was later announced that it would get a Christmas wrap-up movie.
Trivia / Timeless