It is extremely unlikely, but I can confirm that it is not impossible. Last night, I met the first local in my very small town who had a Hive account (that I didn't introduce to Hive) and it was pretty cool. It turns out that a startup based out of my city was featured in this post @hiveio/community-celebration-week from the official Hive account. Let's just say I found out who the person was and met with them irl a few days later.

As for just running into somebody out in the wild and randomly meeting, I look forward to the day that happens.