It doesn't sound likely, but it depends how close your properties are and what your walls are made of. It is possible to buy amplified microphones that can pick up conversations, but would they have any reason for that?
My best guess is that you lead similar lives and are perhaps in the same age group. Then it is inevitable they are interested in the same things and places that you are.
Could I suggest you put your feelings aside and see if you can begin making conversation, even if it's just in passing?