CONNECTED?

Ahead of going to a theatre matinee I was eating a snack of olives in oil at the train station. Being environmentally conscientious I wanted to wash out the disposable dish and take it back home with me to recycle. So I go into the ladies toilets to use the sink. A lady comes out of the cubicle. I step aside from the sole sink for her to wash her hands and explain my slightly out of the ordinary use of the sink. So we get talking about recycling. We walk out of the toilets together still talking. Then we start talking about where we're going etc. We end up sitting on the train together. In our conversation, we find out that: 1. She lives in the same street as a guy who's decorating the outside of my house (I've been to see his house to see the work he's done on it and several other houses in his street before contracting him); 2. She's recently started as a cognitive behavioral therapist at a local place where I have been receiving treatment; 3. She did a prank on an 80's prank tv show in the pub that my boyfriend's parents ran AT the time; 4. The prank was on the manager of a gym, where my aforementioned boyfriend worked - AT the same time; 5. The gym was where my best friend from school also worked at the time, who died in 1989, who this lady also knew who named her daughter after our mutual friend who's birthday is on the same day our mutual friend died. We had no recollection of having met before this day on the train.