Say what you will but Collinsworth alluded to it, probably despite strict orders not to point out all the ref advantages KC gets on the regular. "Crafty veteran move" my ass.
If their LT #79 doesn't get a holding call for grabbing and flinging the pash rusher to the ground, there's nothing they can possibly do to get a flag, probably even murder.
Did you see what Hutchinson did to the tackle on that last play? Two spin moves, and just for good measure clubbed him to the turf with a spinning back fist. Spencer would have to hold every play. Yikes.