It’s been my understanding that Norway does not like Sweden. One of the reasons is that Sweden refused to join WW2 and Norway had to bear the brunt of the German invasions.
Sweden didn’t have much choice re joining WW2 on the Allied side. The Germans were ready to invade in force and Sweden didn’t have much of an Army, etc.
Sweden did play both sides just as Switzerland did but geographically, Sweden had a better geographical and military disadvantage re the Germans than did the Swiss.
I had friends who were either turned back at the Swiss border and denied asylum, or were accepted and “interned” as a way to keep them alive.