As extremely well-known Doctor Who fans, you would expect Steven Moffat and Russell T Davies to chat from time to time, and recently the current showrunner has revealed that he chats via email with his predecessor.
In fact, it seems to be quite a regular thing. The Grand Moff revealed to Vulture that Russell (and indeed David Tennant) has reverted to being a fanboy now that someone else is in charge of Doctor Who.
More to the point (and anyone who has experience of RTD or has read The Writer’s Tale might have guessed) the man who brought back Doctor Who likes to share his opinions on episodes with Moffat. As an example, The Angels Take Manhattan:
Well, he wasn’t the only one!
We wonder if Russell also writes to other showrunners?