Xbox controller stopped working mid-gameplay while plugged into.

Hello! Last night I was playing with my homie for about 2 and a half hours with my controller plugged into my console via USB, when all of a sudden it disconnected and wouldn't respond to any button inputs. The controller was still on but no buttons would work, I didn't even know a controller could disconnect while plugged in. The only thing that I could think of is that I poured some 70% isopropyl alcohol on my controller prior to gaming to fix my sticky buttons, and I poured a little too much and it got on the right trigger and the back of the controller a bit but I don't think that would have hurt the controller. If anyone can help, that would be great!