Thanks, Tommy..hope it helped..
That thing which concerned me, about how Biden places his hands, as if he is holding an imaginary basketball...
The behavorist panel explained it quite well.. He has been coached exactly what he has to say, heliterally, holding the whole package in his hands.
He tries to keep it centered, but it doesn't stay there. If he wants you to believe something..his hands (package) moves toward his right.
If he would rather you dismiss something..his hands move toward his left. You have likely noticed how Trump's voice changes pitch, cadence and
volume at various times, while Biden's is almost a flat monotone.
That is because his words are scripted, taught by rote...and he just mouths the sounds.