That's an interesting theory, Psion. It might also go to explaining the lack of mention of the events of The Miracle. On the other hand, if they pull that, it would lead to the inevitable comparison to the dream season of Dallas
According to Moffat
the final shot in Saturday's The Angels Take Manhattan is a punchline I have been waiting to tell for two and a half years.
My goodness what does that mean?! Psion is freaking me out now. I mean it's a lovely ending but "punchline" seems to indicate more than that.