Overall, not great. I liked that they went with some big ideas, but they didn't give any of it enough time to percolate. They wanted us the realize that the whole season had just been leading up to this, but they had to settle for Batel explaining (I think) that humans, Ilrians, and Gorn all fought evil?
I think if we'd had two episodes, we could've spent the first one retracing our steps a bit, reframe old discoveries, reconnect with old allies, and generally lay the path that was just summed up in Batel's theorizing and M'benga's wall text. You know, show that M'benga's modifications to the medical transporter for his daughter are what allowed Gamble to escape. Discover the ley lines by their similarities to the Gorn's hyperspace network thingy. Stuff like that.
I really liked the life together that Batel gave her and Pike. That was fun, weird, and a little tense. I would've liked *some* commentary on it, though. I wasn't crazy about the quicky wizard duel at the end, especially when it's framed like "my love will overcome your darkness." Just bad.
I also didn't need a mind meld to explain why Spock and Kirk are friends. I feel like they set that course when they teamed up on the Farragut. And while I'm at it, how weird was it that they planned the whole exercise with Kirk instead of the actual captain. The actor was there, just give her some lines.