QBs are coached every day with earpieces.
Bidens problem is recall (and weakness for women of any age), an earpiece is the debate strategy with drugs that work short-term.
Hes used them too - he reacts like hes just gotten the news. Look at the Video where he doesnt know where he is - the delay / and that was a joke, which makes no sense.
There are many Videos like that.
Easy to electronically jam the ear piece. All you need is a mends electric razor