Alan Cumming (Eli Gold) & Michael Kostroff (Charles Froines) also worked together on episode 1.11, Blast from the Past (2018), as Dr. Dylan Reinhart & John Raymond respectively.
Matt Czuchry (Cary Agos) & Chuck Cooper (Gerard Gallo) previously worked together on episode 2.1, See No Evil (2003), of Hack (2002) as Jamie Farrel & Hayden respectively.
Chris Noth (Peter Florrick) & Chuck Cooper (Gerard Gallo) also worked together on two episodes of Law & Order (1990), as Mike Logan & Drew MacDaniel/Art Samuels respectively.