This came about from reading Blunted Sickle, where it's pointed out that the German plans for op. Weserubung involved taking the airfields in north Jutland and then putting them into action the same day to fly troops into Norway.
So, as the title says - what if the two-division Danish army resisted the German invasion for a day or two? Would that be sufficient to make the wheels come off Weserubung, or at least to let the Brits do a lot more damage to the invasion?