Specifically how she knows his name. Well I guess it's happen on the Fields of Trenzelor,

And that's something we agree on.

but that's what I mean - there was so much set-up going on there, and it keeps tying back... Moffat likes to catch stuff he threw in the air years ago.

Yeah, he does-- and then he expands it. Reinette as a seven-year-old and then an adult; same thing with Amy and set over the course of a series-- and then beyond, with a much happier ending. Gah! Moffat's amazing. I love the rollercoaster ride he's taking us on.