I mean, this is just a theory. A crazy, little theory that I just thought about and it’s probably not right or anything, but…
You know how Chuck is God (x)?
You know how he and Cas are in this scene and Chuck touches Cas lovingly, like a proud papa?
What if that was the second.
That touch gave Chuck the ability to Deus Ex Machina Cas.
Wherever and whenever.
What if that God Touch is the reason why Cas just doesn’t die?