I've been in many a meeting when, somebody either above my pay grade or has taken ownership of the narrative of the meeting, you let them own it and go. VP Mike Pence was doing just that - no need for him to interrupt or add to what PDJT was getting across.
You could be correct.
Maybe Trump sharply corrected Pence in the past for
dipping in when it was not directly called for.
Mike didn’t wish to be barked at again for the same thing.