Out of pure interest, if there is a doctor on board and the flight crew wish to speak to him/her about a passenger's medical situation, are the rules prohibiting passengers from accessing the flight deck temporarily waived so that s/he can go on the flight deck, speak to the pilots and liaise via Medlink if necessary? Or does the captain have to leave the flight deck to speak to him/her?
I am, obviously, talking about UK-registered airlines to whom those rules apply