Zack Snyder: Christopher Nolan asked me not to watch the original Justice League

He further stated that out of all the spin-off films that were planned initially, he wanted to make a Cyborg film and an Atom film - two characters which were supposed to be introduced in his version

source https://www.cinemaexpress.com/stories/news/2021/mar/22/zack-snyder-christopher-nolan-asked-me-not-to-watch-the-original-justice-league-23516.html