I'm no silage expert. The custom chopper/bagger folks that did my first bag of silage this past fall did have a kernal processor on their NH chopper.  I  have noticed very little corn in the cows' manure. You can see kernals in the silage itself but most are scored or split, etc.  Almost none in the manure. Very different than the manure left by my calves grazing standing corn.

I'm not sure that means the corn is better utilized or not but it certainly seems that way.

Jim