I loved this story, especially how you united most of the best characters and it worked. :) You clearly poured loads of time into this 'fix 'er up.'

But I wonder: what happened to the original/canon timeline? After the 2nd trial, it sounded like John was resonating with adult!/original!Sam, even though a lot had already changed in the new timeline, so that adult!Sam's memories should have been way diffent already. I guess they would have to continue to exist, otherwise they couldn't have sent John on his quest in the first place, but that also means that nothing changed for them. :( Paradoxes get so confusing. ;) So, that's the one snag for me.