I once read on BMW forum how DWS06+ are really good in snow and, paraphrasing, “i drove 80mph through 6” of snow in Minneapolis.”
I have DWS06 for summer and parts of spring and fall. Yes they move in snow, but it is far from being good tire in snow.
So yeah, get some momentum and CC2 will go through deep snow, same like some aggressive AT tire does.
But as it has been said thousands times, name of the game is stopping and handling.