The Norwegian customs authorities were very much against the CN concept.
From a job protection perspective or did they have reasonable arguments?
Norway has more domestic airports than any other Nordic country (around 50), and it simply would not be viable to do customs clearance at every single one of those for every single flight.
And how many of those 50 have international arrivals? The matter doesn't exist at domestic-only airports right?
Secondly, unlike Denmark, Sweden and Finland ALL international luggage has to be cleared by customs, whereas the other countries doesn't have to customs clear luggage from the European Union, which are the majority of international flights for all the Nordic countries.
The fact that ALL international luggage needs to be cleared is a Norwegian decision though and that decision is what is leading to the highly appalling international to domestic transfer process.
It sounds like Norway would be better off adopting the same approach to EU arrivals as the rest of the Nordics. I understand that not being a EU-member come with restrictions but there are other treaties and rules in place that leverage EU benefits.