Without his teleprompter, Biden can't complete sentences jumping between lies & thoughts, makes long pauses and diluting his incoherent mumbling with "not a joke," etc. Doctor Jill is trying to direct him.
Biden: "My middle name is Robinet. I've been told by my grandfather that this was established. I've not found it yet... so that makes me a son of the American revolution... maybe one of your genealogists can figure it out for me."