He generally likes cold conditions, considering Froome and Landa don't, and if I'm honest I don't think G is ever going to be a GT contender, all fingers point to the Giro.
If I was Davey B:
Poels and G do the Giro as "dual leaders", but everyone knows Poels has the better chance.
They are then still in form for the Tour, where they join Froome and Landa, Froome is big boss and Landa is just domestique.
Then Froome and Landa go to the Vuelta and do the two pronged attack thing, lots of sending Landa up the road in the mountains and letting Froome sit on, and if he gets away, hurragh, if he doesn't, Froome will take them in the TT