That was textbook whiteboard blocking. As an old olineman, it would have been a thing of beauty to see if it wasn’t against my team. As anyone who has played any level of football knows, rarely does it work out like it is drawn up, defenders aren’t where they are ‘supposed to be’. In that game the Bills were not only right where they were ‘supposed to be’, they left an open exposed chest for the olinemen to get into and drive them back with superior leverage. Not sure I have ever seen that at the professional level.