I went with my friend to help a friend of his do some work in the attic. That doesn’t sound clear, so….I went with “B” to “A’s” house to help do work in the attic of “A’s” house.
While there, I was talking with “A” and discovered he and my wife grew up in the same small town (population about 2,000). “A” knew my father in law.
I’m almost 3,000 miles from that small town and I run into someone who knew my father in law.