I trust my own eyes more than Dale Lolley's. Sorry, not saying the Chiefs didn't play some cover 2. But Wallace saw plenty of single coverage, and did little to exploit it.
I wouldn't be surprised if Lolley's source was Wallace himself. Receivers are always claiming their open on every play, or when they're not they were double covered.
Seriously I'm watching the game as we discuss this. And the Chiefs didn't go to any great lengths to take Wallace out of the game.