Nia and Iris mention the monthly brunches with Kara Danvers, Alex Danvers, and Ryan Wilder, the latter of whom invited Iris in The Mask of the Red Death, Part 2 (2023).
Khione manifests powers based on her mood. When she felt upset after her goodbye conversation with Mark, she froze all the food.
Like The Good, the Bad and the Lucky (2023), this has several call-backs to previous seasons:
- Iris is a cop in the dream world: Her Earth-2 counterpart was a cop in Welcome to Earth-2 (2016) and Escape from Earth-2 (2016).
- Iris mentioned that she used to work at CC Jitters as a barista which was during the events of Season 1.
- Nia and Iris are trapped in a dream world by the original Dreamer so that they both can accept their paths: in Duet (2017), the Music Meister trapped both Barry and Kara in a dream world into helping them fixing their relationships with both Iris and Mon-El respectfully, and both characters who were stuck in the dream world were sleeping in separate beds right alongside each other.
Nia mentions missing Brainy after seeing Chester and Allegra flirt. Chester informed the team earlier that Brainy is off world with Kara and J'onn.