The trees have made up their minds though, and their answer is YES -
This is T-401-S in flower (and Eleanor beneath) - and all those flower did indeed turn into chestnuts, currently loading the branches heavily.
This tree has had the chestnut blight for 5 years- see how poorly it's doing? No? You're correct- it doesn't care. Even though there is a large basal canker; you simply can't see anything from a distance. I photograph the cankers each year- and keep worrying they'll win the battle one day; but so far - the tree is winning; and making nut crops to boot.
That's Anastasia posing under the tree, our pony mule; the horses were too busy eating grass- and pruning chestnut limbs; to come when I called just now.
Something that's not only interesting- but important; the size of the nut and the date when they are ripe are often not related; some of our smallest, and some of our biggest nuts- are ripe; now; really quite early for Minnesota: