A couple of things here...first of all, it isn't uncommon for the offensive coordinator to be up in the booth. So let's drop that. Less common for the Defensive guy to be there. I've always assumed that has to do with the different functions. As far as not talking to the o-line, I find it hard to believe that some offensive coach, Foley, the running back coach or someone else, isn't designated to work with those guys and relay information from upstairs when they are off the field. Not sure I automatically buy an anonymous caller to a radio program, but maybe. certainly something worth watching for, but I'd be a little surprised if its true.