@boomerang,
About 40 years ago, the hamburgers and I travelled to Germany to visit family.
We always flew by KLM, going through Schiphol in Amsterdam.
That year, when we got on the plane to come back to Canada, the man sitting one seat over from my father was a former colleague of his. I babysat his kids. They lived about 10 houses away.
We didn't know he'd had a quick trip to Holland.
It was a surprise to see him in the check in line at the airport - an even bigger surprise to discover him in the same row on the plane.