debodun said:
BTW - he never came back.

To me it just sounds like someone who doesnt know how to navigate with a SAT NAV. They'd lost their way, and realised their mistake by other descriptors that they'd been given.
But on the other hand I would not idley wait to find out. So I'd casually drop in a mention while talking to neighbours. Perhaps they would confirm or deny your thoughts and feelings about this matter, or perhaps they would bear the situation in mind should the encounter develop into something else at a later date.