During the blip Steve and Natasha went on missions together while the Avengers were splintered off in different parts of the world dealing with threats. A particular mission they went on was filed as "MATTER DISPLACEMENT" by some CIA agents still working in the compound. They were in Alaska tracking a scientist who had been working with transferring matter from one place to another and connecting it using unstable energy to make the two matters one. Natasha broke into the lab from the ceiling while Steve came in by knocking out guards around the facility and they both stumbled upon the scientists M.D.C. (matter displacement & connection) machine but when they tried shutting it down the scientists emerged and tried to use his machine on the both of them. After blocking some individual rays his shield and Natasha barely getting out of range the scientist shot multiple rays at once and it eventually hit Steve and Natasha in the face swapping their heads. They blacked out after the swap and when the woke up the scientist and his machine were gone so they had to head back to the Avengers compound. While getting used to having each others bodies Steve had to unzip his new suit because Natasha's boobs made him feel like he was suffocating while she started laughing at him.