Right now, watching The Handmaid's Tale.
Into season 2 right now, the show had a sudden shift from feeling like a novel to feeling like a TV show... I'm guessing this is where the source material ran out. The difference is in the process. Screenplays are generally written Outline→Draft→Revisions, while books are generally written Rough Draft→Second (and sometimes 3rd, 4th, 5th...) Draft→Outline→revisions. Not always! Some auteur directors (like Tarantino) write screenplays the novel way, while some authors (Dan Brown) write novels the screenplay way. But anyway, you can tell where the shift occurred because suddenly the dialogue became less characteristic but more catchy and the story became less thematic but more mechanical.
I describe myself as a little dose of toxic masculinity.
