User blog comment:Touchinos/“Our Father, Who Aren’t in Heaven” Discussion/@comment-79.115.72.235-20191215112541/@comment-68.217.236.247-20191226124015

In the AU, it was a world where Sam and Dean were never born. Since in that world, John Winchester had been dead for 40 years, it was also a world where Adam had never been born. We saw in the 300th episode and in the AU, what Castiel would have been like if he hadn't met  Sam and Dean. Presumably, this Michael is very different than the Michael who used Dean a a vessel. It seems possible Adam has a Winchester destiny too.