It's fortunate that it took only 30 minutes for him to be extracted from where he was stuck in the chimney. Sometimes when someone is stuck in the chimney, the person is not discovered till Christmas Eve, and only then when someone tries to light a fire in the fireplace, and the smoke won't go up the chimney, because something is blocking the chimney.
Or there starts to be a smell in the room. Like in the movie Gremlins.