[Madzen1]

Not uncommon in Scandinavia, if you know one of the languages you can learn the other easily. Some people from Finland have swedish and finnish as their mother tounge, the german most likely came from upper secondary school, together with english.

[Shaanie]

As a Swede I have little issue understanding Norwegian, but I would absolutely not claim I speak it. Yes, the languages are similar enough that we can understand each other, but no Scandinavian will be able to speak another Scandinavian language without practice as there are many differences.