User blog comment:Fliu/Chapter 957: More Info on Rocks/@comment-7614831-20190927204814/@comment-24769684-20190927210003

Rocks directly ties into Big Mom and Kaido's alliance, so I wouldn't call it irrelevant to what's currently happening into the arc. Not to mention the stuff with Oden that was dropped toward the end. Sure, a bit of the stuff brought up may not directly lead to something in Wano, but it's good to get it out now to set the stage for when it does become relevant.