It turns out that Sal used to live on Ross Street at the same time I did, and I almost certainly passed her more than once, what with her house then being #115, whereas I owned #96. And they have a cousin who lives on Pitshanger Lane in Ealing. Pitshanger Lane was where our nearest bus stop was when we lived in Ealing.
We waved goodbye to them (among others) at Vancouver Station, and went on our way, taking a taxi to our hotel where we checked in remarkably early (cheers, Plaza 500 - allowing incoming guests to be using rooms before 10:00 is highly appreciated) and crashed out for a few hours. We then wandered into the centre of the city, eventually wandering into the tourist info place at Canada Place.
Where we bumped into Sal and Moya.
The following day, wandering the streets, we bumped into them again.
And a few hours after that, we bumped into them for a third time, at the Waterfront Station.
The odd thing was, we didn't bump into anybody else from the train: just the same pair. (Granted, some were catching ships, and others were meeting family of whatever, but some at least were intending to tour the city.)