There are numerous pieces of Elephant artwork in the background around the house. Theo's Bedroom lamp, Hallway pictures, and in the smaller pictures Dining room. An analogy used in the film, that you believe you can't break free from what's holding you down.
Actor Willie Aames was very comfortable working with the Thelyphonida actors through his time working with a variety of creatures and animals on the television series Swiss Family Robinson (1975)
Actors James DiLullo and Billie Proffitt have previously portrayed a couple having relationship issues in The Same Conversation (2017). Here they portray a married couple with marriage issues.
In the lower-left corner of the computer during the conference call between Alison and Eleanor is a small advertisement emphasizing "1.21 Gigawatts" referencing the film Back to the Future (1985) in which Claudia Wells, the actress playing Eleanor was in.
The online conference calls are via Rekcarevo Communications "A Global Network for an Interactive World" and "CMR-114 Technology at your Keyboard" 'CRM 114' is used repeatedly in Stanley Kubrick's films.