bombed a group interview not because of my answers but because one candidate talked over everyone else the entire hour and I never figured out how to interject

Three of us, one interviewer, and the loudest person in the room answered half the questions meant for all of us before anyone else could start. Left with maybe four minutes of total airtime. Next time I'm just going to say 'can I jump in on that' out loud instead of waiting for a natural pause that never comes.