User:SOTO/Forum Archive/The Panopticon/@comment-1293767-20151029072618/@comment-5918438-20160107022926

I think a better way to assess this would be by official statements.

Also, if we're talking about series 9, it's notable that, from a production standpoint, Under the Lake/Before the Flood, The Magician's Apprentice/The Witch's Familiar, The Girl Who Died/The Woman Who Lived and The Zygon Invasion/The Zygon Inversion were all (not collectively, but as groups of two) filmed together in a single production block, and were all directed by a single director. Yes Girl/Woman, too. Different writers, sure, but they were both directed by Ed Bazalgette.

Heaven Sent and Hell Bent also share a director, but had a production block in between them. Same situation with Face the Raven and Sleep No More, so I'm wondering if Moffat has actually made any statements about the finale being two-part, rather than Heaven Sent being more of a Turn Left or Utopia.