I have had to explain to many students that if something goes wrong, yelling "You have control" is not an option. I'll take control if I need to and you'll know I'm taking control. Until that point fly the aircraft
The only trouble with that is you have absolutely no idea why the person on the controls wishes to relinquish control, think medical event for one. The protocol is for the pilot flying to state "You have control" and for the other to state "I have control", which is what the two in the B-47 did, though the article doesn't state the terms they used to achieve that.
He transferred the flight controls to the passenger, believing that he had more flight experience in the helicopter model. The passenger acknowledged that he had the flight controls
The question is why would you accept control if you knew you didn't have the experience, in this case it seems ego wouldn't allow him to admit that he didn't have the experience he had previously touted.