Interesting! Well for what I know, Dutch just like Norwegian belongs to the Germanic language group, which is compromised out of German, English, Dutch, Frisian, Danish, Swedish, Norwegian and Icelandic. But within that group, there is the group of German, English, Dutch and Frisian, languages who are very similar to each other (as a Dutchman, I have no problem understanding Englishmen, Frisians or Germans), and than there is the group of Danish, Swedish, Norwegian and Icelandic, languages which are alike. But it could be that Norwegian isn't that different from Dutch, I did hear some time that Dutch emigrants to Norway (yes, they exist, even in relatively great numbers) have no problem with learning the language so ...
Hope this information is useful.