So long story short, I live in a small apartment block, not that many flats. I bough a powerline adapter to play my games through Steam Link works brilliantly! I get very good speed, good enough so Steam Link works flawlessly. However I noticed that on peak hours (18:00) the connection gets a little bit busy so the speed drops enough to make it harder to stream.
I checked on my Modem's settings the connected devices and I was surprised to find iPhones and Apple TV's that do not belong to me and all of them are connected to LAN 2 (The same that in my modem belongs to the powerline).
My question is, can the traffic of my neighbour's devices (that seem to be connected to a powerline adapter as well) affect my network? I thought powerlines were encrypted, and also Why are our networks entwined? I supposed my powerline would not detect anything outside my electricity box?