There weren't subtitles in the theater, and that's supposedly the way the movie was meant to be watched, so :/ I could actually tell what was going on, it was just annoying and didn't add anything. I've watched plenty of movies, but almost all mainstream (just no Marvel).

The twist I'm referring to is Lewis Strauss overhearing the conversation between Oppenheimer and Einstein at the beginning, which at the end they clarify actually happened later in the timeline.