I’m not so sure if there is any such thing as coincidence.
If you ‘randomly’ run into an old friend, how random is that really?
Not so much. Odds are in fact pretty good that you will, occasionally, run into an old friend.
Taking this even one step further, if there is no such thing as the self, other than a construct used by us to navigate the universe as individuals while we are on this conscious journey called human life, then in reality we are all connected to the source, and we are actually in control of our own experience while we are experiencing it – even if we don’t see that, or want to believe it to be so.