The NSA rep is seen wearing a 'Bazinga' shirt. 'Bazinga' is a catch phrase from Sheldon Cooper, a character on the TV show The Big Bang Theory (2007). Both "The Good Wife" and "The Big Bang Therory" air on CBS.
Charlie Pollock reprises his role of Detective Gifford in The Good Wife spin-off, The Good Fight (2017).
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.
Mike Colter (Lemond Bishop) & Michael Kostroff (Charles Froines) also worked together on four episodes of Luke Cage (2016) as Luke Cage & Dr. Noah Burstein respectively.