Have a hard time imagining him doing well in a Giro/Tour double. He has never done 2 GTs in a year in his life, closest was half 10 days Giro and then Vuelta in 2023 where he dropped out GC halfway through. Now obviously there are multiple reasons to why that hasn't happen so far (injuries, sickness, missing base in the Vuelta 2023) etc. but it also points to a bigger picture:
a) he has a tendency to pick up something during a GT (injuries, illness, I also think he heavily dislikes the constant mental stress)
b) Unlike in one-day races where he still can perform well being only at like 90% he tends to completely collaps in GTs where his preperation wasn't 100% perfect. Big difference to the likes of Pogacar or Vingegaard.
I'm very doubtful that Giro/Tour doesn't collide with these issues. I think it would be quite likely that if he gets to the Giro well (e.g. podiums) he'll be subpar in the Tour. And if he crashes in the Giro and withdraws I also don't think that will help his Tour prep.
But maybe it's the opposite and if he gets healthy through the spring he has the base for both and (similar to Pogacar in 2024) actually benefits from the mileage.