Jon Gruden and first year Indiana offensive coordinator Mike DeBord (who spent the past few seasons at Tennessee in the same role) have crossed paths a number of times in their careers, often visiting as parts of different staff's trying to pick a scheme or coaching point up from one another.
In this video that Indiana recently released, Gruden and DeBord spend some 15 minutes together just breaking down offensive film and sharing some great coaching points and bouncing ideas, and memories, off one another.
Spend 15 minutes breaking down film with Gruden and DeBord in the clip and you're bound to pick up something really good you can use.
https://youtu.be/azxNJRWWAuA