athonite,
I'm not sure how nobody within BA as an organisation never became suspicious.
I think it's because, even in the RAF and BA, we meet 'different' people and become accustomed to making allowances in order for our company to function. Being slightly 'odd' doesn't necessarily make them 'bad'.
I'm sure that our man covered up major pointers.
I'm sure, like me, you've occasionally thought; 'Is it him or is it me?' (That's rhetorical, BTW
)
Old saying: All the world's queer, 'cept thee and me, but even thee's a little queer.