Sigurd gives a slight shrug. It's unclear whether this is his commentary on Vil's jealousy or the LAN parties, but he doesn't open his mouth to clarify for awhile. Everything that needs to be said is generally implied, so he's not in a rush for any extended exposition on the subject.

Björn probably knows that he'll come to a party if invited by the other, after all. And there are only a handful of people who would likely do so, one of which has already been excluded as a possible LAN party host by virtue of his lack of interest in video games and anything remotely indoorsy.