Im not saying biden has the story right I don't see a conflict in what is listed. New guinea check, ww2 check, plane crash check. sure the cannibal part is conjecture but the report says they found no trace:
"However, according to Pentagon records for missing military members, 2nd Lt. Ambrose J. Finnegan died in a plane crash in the Pacific Ocean near New Guinea.
On May 14, 1944, Finnegan was a passenger on a military plane that departed from Momote Airfield on Los Negros Island and was headed to Nadzab Airfield.
“For unknown reasons, this plane was forced to ditch in the ocean off the north coast of New Guinea,” the military record says.
The report said both engines failed and the plane nosedived into the water.
“Three men failed to emerge from the sinking wreck and were lost in the crash. One crew member survived and was rescued by a passing barge. An aerial search the next day found no trace of the missing aircraft or the lost crew members.”"