FWIW, Coach Paul is Paul Alexander, who was the long time OLine coach for the Bengals he has more than 20 years of actual O Line coaching at the NFL level. The Bengals have the smallest scouting department in the NFL and leave a lot of it to position coaches, so he was tasked with doing draft/college evaluations for a long time. Like any coach, he had plenty of success stories and failures in terms of drafting and developing O Linemen.