Star Trek: Strange New Worlds has complex origins. It technically began as a spinoff for Star Trek: Discovery, with Captain Pike, Mr. Spock, and Una Chin-Riley lending the crew of the Discovery a hand during the second season. That series moved forward into the 32nd century shortly thereafter, leaving Strange New Worlds to continue telling Star Trek stories in the era it left behind. That also places the series in an odd place in the franchise's timeline.
Source：https://www.cbr.com/strange-new-worlds-prequel-star-trek-tos/
