Originally Posted by
rickg523
Why not say a leprechaun was hidden in the pilot's footwell and it was this malevolent little green man who was bothering the pilot every time he closed his eyes? There's just as much justification for that theory as for saying these people were shouting at one another.
Your premise is incorrect. It is a possibility that the two pax were shouting at each other. A leprechaun in the footwell is not a possibility. So, there is not “just as much justification“ for the theory that you posit as there is for the possibility that shouting was occurring.