User blog comment:Orion Invictus/Are the Winchesters going to pursue a Hand of God (and other opinions)?/@comment-68.217.235.96-20191227193740/@comment-98.115.189.149-20200205150626

Apologies if I raise a touchy subject with this topic, In Soul Survivor, Sam said he got Dean's blood type, during his effert to cure Demon Dean. It could be seen the type he obtained was O,  That caused a stir, since John Winchester's dog tags said AB. Some people say Sam just meant that O was universal donor, so it wouldn't hurt Dean. I was rewatching the Real Ghostbusters, the part right after Chuck talks about angels, "Not nearly as lame as you think". Chuck continues talking in the backround, and it sounded like Chuck said, "John isn't really their father," when Sam and Dean start talking to each other. Even if it started by Rob improvising, the writers could use it in the ending. If John isn't their father, then who is? What might that make Sam and Dean? I'm assuming Mary didn't know, someone able to appear as John. Chuck himself? Death?