Well, if some of the "metaphysics" is actually correct, then perhaps for person A their own mindset / vibes / energy (not any external physical factor) attracted person B (who was in a similar state of mind/energy of wanting to meet someone or anything along these lines) to them in this particular instance. "Like attracts like."

Perhaps the person A was thinking about meeting someone new or having a conversation beforehand and had this thought pattern, emotional state, positive mindset before sitting and waiting, and synchronicity came into play at this particular time when they're sitting and waiting.

I guess if we live in a magnetic nature universe (there are magnetic universe theories out there), then it kind of makes sense we each attract what we think/feel/want/need at one point or another over time.

So maybe sometimes you'll be approached without physically approaching another, as long as you had or have a state of mind/spirit/thoughts that you'll meet new people and share your time with them in near future.

In case anyone thinks I am super cray cray, don't worry, even my family thinks I am lulz, but there are scientific theories and/or not so scientific texts on how we form relationships or anything else for that matter.

We can all overthink it until kingdom come, but perhaps it's wiser to see it as better things are just around the corner.

Heh, one of my closest friends, I first thought she was a total biatch, and she just kept talking to me and/or at me, and even wrote my homework once without asking if I needed it, but shit like she knew me via telepathy. We've been friends ever since, I told her that I thought she was a stuck up lil shit. She made me buy her lunch. ehehehe