Michael Keaton appeared on Jimmy Kimmel Live earlier this week to talk about his work in The Trial of the Chicago 7 as well as plans for him to reprise his role as Batman in Andy Muschietti’s in-development The Flash movie. While Keaton declined to say much about donning the cape and cowl once again to mentor Ezra Miller’s young Barry Allen in the DCEU film — beyond confirming that he’s “having discussions” with Warner Bros. — he did sound off on another very important topic.