guess I did pretty good avoiding spoilers because the bi-regenertaion twist caught me TOTALLY off guard! About a week before the special, I saw thumbnails for videos on YouTube (which I resisted the temptation to play) with blurbs supposedly quoting RTD this special would fundamentally shake up DW lore. From that I pondered the idea we'd learn that the Doctor is a Celestial like the ToyMaker, maybe one that never fully developed their powers when discovered by Tektuon in "The Timeless Children". How that came to mind, shoot, I have no bloody idea. I just figured RTD would delve heartily into the Timeless Child concept and add his own layer to it since interviews revealed him liking Chinall's take on the mythos.
Then, when 14 requested that Donna and Mel pull at his arms, I figured they were just going for a different look to the regeneration effect, Tennant would just kinda' "peel away" (not in a gory gruesome sense) to reveal Gatwa beneath. Yeah, even as I imagined that, I knew they would NOT let that be the final image we saw of Tennant, but occasionally some of us have weird ideas in the heat of the moment knowing full well the imagined notion will not fly.
Then, when 14 requested that Donna and Mel pull at his arms, I figured they were just going for a different look to the regeneration effect, Tennant would just kinda' "peel away" (not in a gory gruesome sense) to reveal Gatwa beneath. Yeah, even as I imagined that, I knew they would NOT let that be the final image we saw of Tennant, but occasionally some of us have weird ideas in the heat of the moment knowing full well the imagined notion will not fly.