well, the classic blocking bet scenario is one where his range is say 14 combos of hands which beat us, and 20 combos which we beat, but we think like 14/20 combos fold to a large bet and he isnt likely to bluff us if we check (or worse, does so with the right frequency). but he will call say 30/34 combos to a 1/3 pot bet, fold 2 combos and jam 2 or something. so then we still have the best hand 55% of the time when called !

i think this spot is somewhat like that, im not even sure he jams an ace, since "what do i get value from ??" and we might have Kx.

or he might jam Ax, which is ok, because we are going to hold Ax ourselves extremely often in this spot, so a bluff looks near suicidal for him. so we dont need to worry about getting bluffed.

i think we can bet 1/6 to 1/2 pot and expect to be good a little over 50% when called