I find this interesting, as I always fail coming off the chest. If I can get it off my chest, I can lock it out. I always assumed the chest was the 'most challenged' part in the bench press.
After doing dumbell rows today I'm not sure though! They felt super light after my smolov jr cycle. Maybe the lats really do get the bar off the chest on bench.
(my chest is hardly outstanding, but then ive never seen a person who can bench 1.5xbodyweight and has a small chest)