When you begin covering an NFL team, one of the things you learn quickly is that you should get to know the offensive linemen. Find their corner of the locker room and ask them good questions, because, as a general matter, they tend to be insightful and expansive in their answers. They understand the full scope of the team’s offensive system — their jobs require them to understand it — and they are often willing to share their expertise. Talking with Lane Johnson, over his nine years as the Eagles’ starting right tackle, has always offered an added bonus: He would say things other players woul…
