If a fat Bellend, who was KO'd by a LHW in Stevenson was able to KO Haye out of the ring then I don't see why a better fighter in Conteh couldn't do it
Haye was a useful cruiserweight to be fair, even though I think he gets waaaay too much mileage out of being a good fighter in a historically awful division. He did have a bit about him there. Saying that I'd still pick Conteh.