User blog comment:Tommy,Klaus&Kol2012+/A question about chucks death/@comment-4554525-20200210004946/@comment-98.115.189.149-20200215065913

I don't think we can be sure of what Chuck wants, no matter what he said. It could still be some kind of a test. There has been a lot of foreshadowing on the subject of brother killing brother, and many others have told them that's where they are headed, but if it happens, I would expect there to be some kind of twist to how and why it happens that way, or in the outcome. Then there is Castiel, who seems to have been fully accepted by Sam and Dean as an adopted brother, whom they would stand by and die for (the fight with Ramiel).