Originally Posted by
intuition
As I said upthread, if I book a r/t eg ARN-OUL it is not possible to get a C class ticket. It is only sold in Y for all legs. Also, old site and multi-city also fails to find such a business class ticket. To me, it seems they are simply not selling Business class on domestic flights, so perhaps you are employing a trick to get the ticket in the first place.
Replace ARN with CPH or OSL.