Bob: Congrats on your role as Ra's al Ghul in Gotham.
Han: The what now?
Bob: Ellie is binging it, which is a bit annoying.
Bob: But when Ra's came on screen the first time, we both asked "What the fuck is Han doing there?"
Han: Haha
Han: I'm famous!
Bob recognised Han as Ra's al Ghul in Gotham and congratulates him getting the role.