Only one team has ever been caught filming another team's walkthrough; the Denver Broncos, when they filmed the 49ers pregame walkthrough. I remember reading Broncos messageboards back then and they were so worried about losing their #1 draft choice, or worse, since Goodell had already set a precedent with the Pats.
As it turned out, the Broncos were a bad team and weren't a threat to the Rats quest for a Superbowl so they were given a slap on the wrist; $50,000 fine.
Combined with the salary cap violations that allowed the Broncos to keep players that they otherwise couldn't, the Broncos are the last team who should be complaining about cheating.
Of course, BB is so slick that he asked the for permission from the Rams and the NFL before interviewing and hiring McDaniels. That gave the Pats a viable alibi they could use, and they even got the Chiefs to pretend that they were interested in hiring McDaniels too to improve the cover up even more. What a cheating snake BB is.
It has already been mentioned before, but what about the Rats consulting with Rob Ryan and Eric Mangini about devising a game plan to help beat the Pats in last year's playoff game? BB and the Pats never uttered a peep of protest about it, but I wonder if that is actually against the rules.
If it IS against the rules, it is likely just one of those things that everyone does and everyone looks the other way on; like stealing signals, unless you are a loser franchise who can't beat the Pats without turning them in to your Uncle Roger so that he can try and bring them down to size for you.