But there is a huge difference between film acting and theatre acting. In film you just memorize your daily lines. What I find magical is how these actors go into character and deliver a line naturally for that character. I assume for serious work they practice with their own acting coach behind the scenes and then also practice during the shoot according to the directives of the director. Here Nuri Bilge Ceylan shows how to eat walnuts https://youtu.be/G6_pwltI85Q?si=2NXm1HP54YbAhepV It looks like the delivery of lines are the least important part. (In Turkish, but you'll get the gist of what he is saying.)