They are in the MCU, and you can accidentally spoil some pivotal events by watching them before you’ve seen certain movies. **Don’t watch the Ant-Man and the Wasp end-credits scene until after you’ve seen Avengers: Infinity War. If you’re watching the MCU programs in order of release date, you can tackle these after you’ve seen all the movies (Black Widow was originally meant to premiere in 2020.) That said, not only does the show mostly exist outside of time, but it also harbors major spoilers for several other MCU movies. If you’re watching everything for the first time through, we recommend saving Loki for last (or at least until after you’ve seen Avengers: Endgame).