During a long take scene...
In one of the many planned long-take scenes, what if an actor simply forgot their line?! Especially near the end of a very long take. Would the director yell "Cut" and try the entire scene over again?
sharewould be VERY SIMPLE to fix with CGI. and of course ALL audio can be dubbed and fixed. 90% of audio is replaced/added in post. Heck they even UPDATE DIALOG WORDS in post sometimes and most don't notice.
There's a lot of CGI in this movie. It's why the long cuts are so boring: bunch of stuff happens, in order, and we must plod through it in REAL TIME.
Also, SOMETIMES there are cuts in long takes. They just don't tell you about them.
I watched this one once, but never again.