Morale: Swedes use strange words (fönster, trottoir, örngott, fåtölj) and even letters (ö, ä for ø, æ). Norwegians understand Swedes and Danes better than vice versa. Norwegian is Danish with Swedish-ish accent. Norwegian is even makes you understand quite a bit of Icelandic.
There. Case closed. Next time: Bokmål or Nynorsk?