You're still wrong, or nearly deaf. During the night I can hear airliners between 9 and 13KM up. With closed windows. Through triple paned glass. Sometimes even while hearing music with over the ear headphones, at between 20 to 30% volume. It varies in intensity with the weather, but it's regular.

Edit: They don't need to be directly above me, 10KM to any side suffices. Of course it depends on the type, too. From experience, curiously clicking on flighttrackers to see who was that, it doesn't really matter though, because it goes all the way from small bizjets over airliners and freighters to heavy transports. And then there is the military. Always louder, no matter which. Even subsonic.