Julianna Margulies (Alicia Florrick) & Thomas Kopache (Liam Meade) previously worked together on episode 5.19, Old Times (2009), of ER (1994) as Carol Hathaway & Dr Stofsky respectively.
Julianna Margulies (Alicia Florrick) & Howard McGillin (Lloyd Garber) previously worked together on episode 4.20, Of Past Regret and Future Fear (1998), of ER (1994) as Carol Hathaway & Herrguth respectively.
Alan Cumming (Eli Gold) & Jim Ford (Lawyer) also worked together on episode 1.13, Tribal (2018), of Instinct (2018), as Dr. Dylan Reinhart & Chad respectively.
Alan Cumming (Eli Gold) & Elise Rooker (Crystal Redmayne) also worked together on episode 1.12, Live (2018), of Instinct (2018), as Dr. Dylan Reinhart & Jessie respectively.