Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors; Procedure; Company Policy
Blocked in ZZZZ1 and noticed that the ZZZZ ramp had left the ramp copy of the signed release on aircraft.  I handed the release to the ramp agent in ZZZZ during pre-flight after signing.We got to the jet which had just arrived.  Due to health screening; we did not go into ZZZZ Operations as we normally would. The inbound crew was still onboard; and we had [X] jumpseaters.  We then had to deplane while the disinfecting crew came onboard.  It was very hectic.  Once on board; and able to get to the cockpit to pre-flight; I had to call into ZZZZ Operations for the trip folder with the weather and flight plan release. After I signed the release; I placed it on the first observer seat until a ramp agent came to the cockpit. The ramp agent took the release from me; but must have placed it down on the 1st observer seat; and then forgotten it.  The ZZZZ ramp is not used to taking the signed release as we normally review the release and sign it online in ZZZZ Operations.  I did not have a chance to review the release via iPad prior to arriving at the aircraft due to the health screening; and the commotion at the jet with cleaners; jumpseaters; inbound crew hanging out; etc.Just need to remember to assure it goes overboard with the ramp agents; the ramps agents need to be reminded to not forget the paperwork.
Air carrier Captain reported they departed with the flight release form still in the aircraft. Reportedly; ramp personnel forgot the form in the aircraft after the crew had handed it to them.