Though the first scene of the episode picks up minutes after the last scene of the Season 3 finale "War Paint", Sheriff Nedley comments that "It feels like I've been standing here for two years." This is an inside joke on the nearly two year gap between the episodes' air dates, caused by financial issues with the production company.
In the snowed over Garden, Waverly stumbles across four books or folders. There is one for Wynonna and one for Nicole. Doc's says Doc Holliday, not John Henry Holliday and Waverly's says Waverly GIbson (her mother's maiden name).
Though this episode aired first, it was actually filmed after Season 4, episode 3, Look at Them Beans (2020), so Melanie's directorial debut could be done first before the rest of the seasons filming.
At 2:33 Wynonna paraphrases Neil Armstrong's first words on the moon. She says "That's one small step for a. MILF; a giant leap for Milf-kind".