Using time travel to defeat Thanos during Avengers: Endgame should have been against the rules of the Time Variance Authority; however, one theory suggests that connection between Doctor Strange and the head of the Time Variance Authority could explain this apparent pothole. With Doctor Strange: Multiverse of Madness and Loki season 2 both on their way and promising to explore the multiverse in more detail, there may be answers soon about whether or not there’s any truth in this idea. This theory could also provide the perfect setup for Kang the Conqueror stepping into Thanos’ shoes as the next big MCU villain.
The MCU’s phase 4 follows on from the decade-long Infinity Saga and the final defeat of Thanos. Ever since, the MCU has leaned heavily on the multiverse concept — a set of parallel universes where, for one reason or another, things worked out differently. Loki explores this idea in some detail, showing the world of the Time Variance Authority (TVA), who track down and "prune"anyone who strays from the timeline they’re supposed to follow. Spider-Man: No Way Home takes things a step further, as Doctor Strange breaks the multiverse itself. These stories see both Loki and Peter Parker meeting up with very different versions of themselves from other parts of the multiverse. It looks likely that these stories are setting the stage for the next big MCU conflict.
Related: Loki Season 2 News & Updates: Everything We Know
During Infinity War, Doctor Strange used the time stone to look through all possible realities to try and find a way to beat Thanos, and Endgame showed that their only way to do this was to use time travel. This feels contrary to what the TVA is doing during Loki, but He Who Remains explains to Loki and
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