After a coach talks to the calling umpire, if any coach from either team talks to any other umpire about the play the only thing that umpire should tell the coach:
Coach, the calling umpire has already made his call and talked to the coach about it. I have no comment.
New rule added to the 2024-2025 rule book: Assistant coaches may not leave their position in the dugout or bullpen area to appeal, question, or argue on the field. EFFECT—The violator shall be immediately ejected.