Final answer:
Flight medical data is typically exchanged between the pilot and the flight surgeon to ensure the pilot's health is adequate for the safety of the flight.
Step-by-step explanation:
Flight medical data is typically exchanged between the pilot and the flight surgeon. This exchange is crucial to ensure the pilot is in good health to operate the aircraft and for the overall safety of the flight. The flight surgeon is a medical professional specialized in aviation medicine and is responsible for the medical qualifications of pilots and aircrew. The conversation between the pilot and the flight surgeon could involve discussing the pilot's physical and psychological health, and any medications or treatments that might affect flying abilities. This is not information that would be exchanged with air traffic control, maintenance crew, or cabin crew as they are not involved in making medical fitness decisions.