Lily Rabe (Emma Hall) and Hamish Linklater (John Tyler) are a couple in real life and have two children together.
The project was greenlighted by TNT and shot in 2018. But in 2020 the network decided not to air it. Then Amazon picked it up for a 2021 premiere.
The birthday date (6/29/1982) on Emma Halls drivers license is the actual birthdate of the character who plays Emma Hall (Lily Rabe).