User blog comment:General MGD 109/Leviathan powers, subpression or immunity?/@comment-3045936-20121208010216/@comment-3481504-20121208030909

I don't see any evidence that says, oh "Leviathans can shut off Angelic power". It there was, it would've undoubtedly occurred in 7X22 "Survival of the Fittest". When Dick threw Cas, if he could've shut off Castiel's Angelic power, he would've died as his near-impenetrable threshold would've been negated in the process, and his collision with the wall would've pulverized his body.