For All Mankind can help advanced learners become more confident with fast and natural English. With the dialogue moving at a natural rhythm, viewers should catch most of it, although a few moments may still be challenging. Learners will hear plenty of useful natural English, but some lines may still require a second listen. Following the story requires attention, so language difficulty is not the only challenge here. If your English is close to C1/C2, For All Mankind can be useful for building confidence with more complex narratives.
