I have a network-wide pi hole and I noticed that it requested activity.windows.com, a url blocked by my pi hole, even while my pc is suspended. I pinged 10.0.0.217 and it is currently unreachable. So, somehow, windows pc’s turn on networking, phones home, and turns off even while suspended.
Creepy behavior
This is why I disconnect my machines from the network while in sleep mode (I use only wired connections). For me it’s perfectly sufficient if they update the apps while I use them.