My second daughter saw her middle school French teacher in CDG airport when she (my kid) was on her way to visit Italy with my mom. The teacher was leading a bunch of the students from her school on some school trip. One of the pricey ones my kids couldn't ever go on, lol.
I've had a few things happen that made me wonder about the nature of reality, honestly. Had a ridiculous sex dream about a friend of ours who we hadn't talked to in years and he called the next day (he is not someone I wanted to have sex with) and I also told my best friend I was pregnant in a dream (I hadn't told anyone and this was pre social media) and she called me the next day to congratulate me. Prophetic dreams when I used to record them. I'm not sure any of that stuff is coincidence though.