Many viewers have wondered why #Beckett doesn’t have #subtitles for when characters speak #Greek, but that is actually a creative choice meant to immerse the viewer, so viewers will relate to Beckett even more.
#L3AVT @trafilmproject
https://www.comingsoon.net/movies/news/1191208-why-greek-isnt-subtitled-in-netflixs-beckett

Which means that Greek viewers will have to rely on their imagination to relate to the character's not understanding the language. (I wonder whether plot elements are revealed earlier for Greek-speaking viewers).

Watched it, no plot-related dialogue in Greek. Some of it is very culturally-bound. A sign of authenticity like many visual elements (furniture, signs, clothes). Sometimes it felt like a wink to Greek-speaking viewers.