While one movie was part of an on going franchise with established characters, and the other was a brand new story with completely original characters, Rian Johnson says that he didn’t approach writing either of them any differently, because both stories were still brand new, and both still had to work in their own way. According to Johnson…
Article source: https://www.cinemablend.com/news/2491184/rian-johnson-compares-writing-knives-out-and-star-wars-the-last-jedi