Biden already has the debate questions, Brazille already gave it to him a month ago..but its impossible for anyone to memorize them, so they need a little help, either notes telling them what to say, or in this case, an ear piece, I mean what’s the big deal Fingers Joe, let someone look at your ear, see nothing inside and move on
I think this might be an effort to ‘pump’ him up on another ‘energy’ shot. Wouldn’t shock me if Joe fell over and had some heart attack from all the ‘juice’ they pumped into him.