Gotta say, I'm glad we are at this point. Year's of hyping these 2 Yonko and they finally show off something pretty devastating like this.
I still actually wonder if BM is out the entire battle. To me it looks like her kids will catch her (that'll be how the next chapter starts maybe), but she should return considering she's not injured and there's no way she's leaving Wano without her souls. Plus, I doubt they beat Kaido at all in time, let alone actually figuring out what happens the next few chapters with the island