[It takes him a moment to realize Raphael's offering to help keep that quiet. He takes a deep breath and smiles at him, weakly but gratefully.]

Castiel, naturally. I told Gabriel. I don't see either of them volunteering that information, though.

Samandriel might know through the grapevine, I suppose, since he's after my time. I don't know for certain.

...and the Winchesters know, but good luck keeping them quiet. [Then again, they've got no reason to make nice to Michael, either.]