Quite unusually for this series, the first two parts of the story had their worldwide debut not in the ongoing American comic series, but in its UK sister series Doctor Who: Tales from the TARDIS, appearing in the first and second issues of its third year, less than a week before their respective American printings. Regardless, the fine print on the issues' contents pages still credit 13DY2 1 and 13DY2 2 as their original printings.
The Thirteenth Doctor, while hiding her identity from Martha, uses the name "Jane Smith", which caused Martha to remark that she has a mate named "Smith".
This is the first Titan Comics story to make its debut in the UK before the US, at least as far as parts one and two are concerned.
Despite evidence to suggest a setting after Spyfall, the TARDIS interior uses its series 11 design.
While in 1969, the Thirteenth Doctor says the Weeping Angels are "22 years away", which would be 1991. Despite this apparent mistake from the writer, she mentions the correct year of 2007 on the previous page.
The Thirteenth Doctor expresses her appreciation for Janice's ginger hair, saying that she had thought about going ginger herself. Likewise, the Tenth Doctor, upon meeting his future self, expresses his disappointment that she isn't ginger. (TV: The Christmas Invasion, The End of Time)
Ryan questions why the Thirteenth Doctor cannot simply remember what is about to happen to her past self. The Doctor tells him that memory flows very differently when crossing ones own time stream. (TV: The Day of the Doctor)
The Thirteenth Doctor assures Martha that her and the Tenth Doctor do eventually get their TARDIS back using Sally Sparrow's notes, (TV: Blink) and that Martha goes on to live past her travels with the Doctor. (TV: Last of the Time Lords, et al.)
When first encountering a Weeping Angel, the Tenth Doctor tells Ryan, Graham, and Yaz, "whatever you do... don't blink". (TV: Blink)
The Tenth Doctor says he has not seen the Autons since "back when [he] first met-" before his successor cuts him off. (TV: Rose)
Despite this, the Doctor has in fact encountered an Auton on at least one other occasion since his first meeting with Rose. (COMIC: Untitled)
The Thirteenth Doctor tells the Weeping Angels that they do not know "just how much [they have] taken away from [her]". (TV: The Angels Take Manhattan)
The Tenth Doctor recalls having been in the tunnels under the River Thames "at Christmas", remarking that he didn't much like who he was that day. (TV: The Runaway Bride)
The Thirteenth Doctor opens the doors of her TARDIS with a snap of her fingers, to the surprise of her predecessor, who has not yet learned it was possible. (TV: Silence in the Library/Forest of the Dead)
The Tenth Doctor recalls there being a "big vat of goo" when he last encountered the Autons. He goes on to mention that he left all his anti-plastic "a few decades in the future". (TV: Rose)
The Thirteenth Doctor uses River Song's phrase, "Spoilers", whenever her predecessor asks a question about their future. The Tenth Doctor later admits to liking the phrase, with his successor saying that "[he] certainly will". (TV: Silence in the Library/Forest of the Dead)
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