Possibly Brother, Twins or Miss-identification ?
Almost certainly not the same pilot !
Once travelling to NZ with my brother, a fellow passenger challenged me saying he thought I seemed to need the rest room too often, until I pointed out it was my brother who had passed down the cabin earlier !
On another flight I remember being asked if I was Prince Charles when travelling in the far east. When I confirmed not to be HRH, the Chinese guy who asked the question then did express his opinion to say he thought "we all looked the same to him".
- Had to have a chuckle !