What a coincidence it was to see an old friend of mine in the same shop as myself.

Coincidentally some other of my old friends were also in the shop. what a coincidence that was. It was a such a surprise. It was lovely to see them after such a long time.

Coincident: Is an adjective having the same position in space or time.

If a husband has an appointment at the hairdressers at the same time as his wife is at the dentist. so that was Coincident with his wife's appointment


It is not accidental as coincidental meetings often can be.

does any of this make sense?

Thanks for the explanation, dogsbody70.