I get your point but its not like they would have to talk him through every answer. All they need to do is say key words at certain points to help him out. A word here, a theme there, a fact or rebuttal point at a key time. That’s all they need to do.
But the cia and fbi have micro earpieces now. Why have one so visible?
You can even buy the invisible ones now.
So.... what the heck is in Joe’s ear?