Ahh, interesting. Im my light testing with several dummy nsecs, I have not had any relays be picked up or notes from other relays bleed into the private ecosystem. I'll mess around with it a bit and see if I can figure our what would cause the automatic connections / discovery to occur. Would that be a possible feature you are interested in building, to toggle on/off the auto connect features ?
Discussion
So the best example of it automatically connecting to relays is when you view a users profile.
It will pick the 4 fastest relays that user has listed and read their notes from them. its more reliable than asking your relays for another users notes when you could ask their relays
Ive been thinking about adding an option to turn this functionality off, Ill bump it up my priory list