Bill wrote:
In fact, just before I departed his airspace he
asked me where 30L was based. He wanted
to know specifically which airport. I told him,
but never asked why he wanted to know, and
I wasn't met by anyone when I got home. Who
knows what that was for?

I wish they'd explain questions like that. Recently, when I returned to
my home airport after being gone for about 1.5 hrs, Ground control asked
us what time we had taxied out earlier that morning. Never explained why
either. ??