Combing of coaches' phones has begun; NCAA interviewing M staff today

From Sam Webb's latest update ($): "I was told the combing of at least some coaches' phones has started, so the hunt is underway to see whether there was any involvement beyond Stalions himself."

In addition, Nicole Auerbach tweeted that "NCAA investigators interviewed members of the Michigan football staff today, a source confirms to @TheAthletic."

Also, Isaiah Hole says that there is an established network within the B1G whereby the designated sign-stealers on each team trade with their friendly counterparts on other teams (a remarkable development that I wasn't aware of).

I actually spoke to a Big Ten source, who gave me a quote — if other people are out there sharing anonymous quotes and these ESPN and SI articles, I can too. So, here is what I learned, ‘Every Sunday, coaches and support staff with mutual connections throughout the conference contact each other to trade not just schematic notes, but also to trade signals. Some of the top teams who consistently trade signals and have very accurate information on common opponents are Michigan, Rutgers, Ohio State, Indiana, and Purdue. Other teams who are decent at it and would always look to trade are Illinois, Northwestern, Maryland, Minnesota, and Penn State. Wisconsin was oblivious to it but is likely no longer with the new staff. Michigan State, Iowa, and Nebraska appear to be oblivious and out of the loop.’