The Marvel cinematic universe has succeeded in part to its effective interweaving of narratives amongst its film properties, and that will again be the case in the upcoming Doctor Strange. While not to the same degree, that interweaving goes beyond just what surfaces on screen.

Case in point, Doctor Strange is already known to have 2 after film sequences, but director Scott Derrickson is only at the helm of one of those. In a recent interview with Den of Geek, the director notes that he received some help from Thor: Ragnarok director Taika Waititi on the mid-credits scene.

"Taika [Waititi] shot that - I can't say if it's from Thor 3 or not, but we had our set up and were going to strike it after I finished shooting and it's a very expensive set with the chamber of relics and the window and everything... I don't know where they were on the script process, but it was before they were in production. Taika wrote that scene and came in and shot it."

That sequence was actually revealed in a photo from the set, where Thor is holding a note with the Doctor's address on it, but many (including us) at the time thought it was from Thor: Ragnarok. Now it seems it was part of the mid-credits sequence.

This isn't the first time directors under the Marvel Studios umbrella have helped each other out. Director James Gunn (Guardians of the Galaxy Vol.2) actually directed the post-credits scene from Thor: The Dark World, where Sif and Volstagg make a deposit to The Collector's vault. If you want to know what the full mid-credits sequence contains in Doctor Strange, you can head here.

From Marvel Studios comes Doctor Strange, the story of world-famous neurosurgeon Dr. Stephen Strange whose life changes forever after a horrific car accident robs him of the use of his hands. When traditional medicine fails him, he is forced to look for healing, and hope, in an unlikely place – a mysterious enclave known as Kamar-Taj. He quickly learns that this is not just a center for healing but also the front line of a battle against unseen dark forces bent on destroying our reality. Before long, Strange – armed with newly acquired magical powers – is forced to choose whether to return to his life of fortune and status or leave it all behind to defend the world as the most powerful sorcerer in existence.

Doctor Strange stars Benedict Cumberbatch, Chiwetel Ejiofor, Rachel McAdams, Benedict Wong, Michael Stuhlbarg, Benjamin Bratt, and Scott Adkins, with Mads Mikkelsen and Tilda Swinton. Scott Derrickson is directing with Kevin Feige producing. Louis D’Esposito, Victoria Alonso, Stephen Broussard, Charles Newirth and Stan Lee serve as executive producers. Jon Spaihts and Scott Derrickson and C. Robert Cargill wrote the screenplay.

Doctor Strange hits theaters on November 4, followed by Guardians of the Galaxy Vol. 2 on May 5, 2017. Next up is Spider-Man: Homecoming on July 7, 2017, with Thor: Ragnarok landing on November 3, 2017. Black Panther debuts on February 16, 2018, followed by the eagerly anticipated Avengers: Infinity War on May 4, 2018. Ant-Man and the Wasp hits on July 6, 2018, with Captain Marvel finally hitting theaters on March 8, 2019.