Through his first two hours of oral arguments on Monday, Justice Neil Gorsuch questioned every attorney who came before him with one exception: Neal Katyal.

Gorsuch’s silence during Katyal’s arguments is noteworthy, as the newest justice played the role of a happy antagonist throughout the rest of the day’s hearings. Unlike during the Senate hearings on his nomination, Gorsuch was not shy about injecting himself into the various cases and controversies before him.