But lets say Pogi would win Giro and Tour. From that point of view and if there would be anything left in the tank, he indeed could attempt to win Vuelta too. As beating all big rivals at the Tour wouldn't make it harder, to do the same at Vuelta.
But obviously this are hypothetical discussions. As far as the double goes, this season Rogla, Pogi and Jonas will likely attempt it. Lets see if any of them succeeds. Due to the quantity of attempts and quality of riders. I do see a possibility, for it to happen this season. Still, at best, only one could succeed. So lets see if this is the year.
I agree a double is a possibility - Jonas deomstrated that this year. Let’s be in no doubt who would have won the vuelta if it was mano a mano.
A double is likely this year - Vigno is by far the most likely to acheive it - a) because a tour/vuelta double is easier than giro/tour and b) he is overwhelming favourite for the tour. He would be even if Pogi did not have the Giro in his legs, but even more so because pogi will have done the giro