I worked in city finance in London for two decades, I came across lots of people in my dozen or so different roles in that time.
I now work in a completely different sector in a different city.
Today I sent an email to a company in a third unrelated industry in Newcastle and the reply came from someone I worked with in London 20 years ago.
It blew my mind but are these coincidences more common than we think, degrees of separation etc?