To me it looks like they're trying to start off with the basics and install a 2/3 zone right now with slide protections, but it's not working. Particulary on the right side.
Nevermind the breakdowns in pass protection, I watched Carey and Colombo try to execute a simple double team on the backside of an IZ where nothing but a disaster took place, with Colombo blocking Carey in the back while Carey was engaged with his man. If you're having trouble with that elementary aspect of zoning, I can't expect them to be able to perform the necessary functions in pass protection.
Pouncey at least understands the concepts of zone blocking from playing under Addazio and Meyer at Florida. Carey has no clue, and Colombo can't get to his landmark half the time. He's not quick enough.