Double spread chapters go by so fast, and this chapter was chock full of them.
Oda is telling us through CP0 how the conflict is gonna progress moving forward. We've had several chapters devoted to the roof, cementing how important it is for Luffy and the rest of the super rookies to win. It was easy to neglect everything else happening below with that much emphasis on the main battle. Now it's clear the rest of the Alliance, specifically the Strawhats, must defeat the rest of the notable Beast Pirates alongside Luffy and Zoro besting the Emperors. The decisive battle is here, with Oda using the Shogi game as a framing device for the war between the two sides, whilst the agents countdown the dwindling forces.
I like the choice to include Yamato among the panels depicting the crew. They really feel like a Strawhat at this point (major Enies Lobby Franky vibes), which is why I expect they face a Calamity, at least before meeting their father.
On the roof, Kaido is slowly getting more and more serious as he begins to acknowledge Luffy and Zoro as threats. Kid and Killer are also noting the superiority of the duo as they actually hurt Kaido, not with tricks, but legitimate attacks.
These legitimate attacks on Kaido are also a byproduct reward for Luffy's and Zoro's efforts during the arc. Efforts that directly contrast with Kid and Killer's. Luffy saved and protected Hyogoro and the rest of the imprisoned Samurai, who thought of him as an evil pirate outsider, and then taught and helped him to access higher levels of haki application. Meanwhile, Kid doesn't bother with the Wano warriors and escapes, learning nothing in the process. Killer, while he had good intentions behind his actions, became a rampaging Man-slayer for Orochi, instilling fear in the populace and attempting to kill innocents, while Zoro has been protecting and bonding with the citizens of Wano as a wandering Ronin. His reward was a sword that allowed him to become stronger during the times of preparation, and is seemingly helping him grow during the midst of this current face off.
The nature of this chapter leads me to believe the focus will slowly transition towards the rest of the battles below, leaving the fates of Supernova a mystery until we go back to them. Kaido's having the time of his life, and despite all the damage he's accrued over the course of battle, still stands tall, while the rookies begin to tire. This is gonna be an uphill battle for the Alliance who still must defeat these tyrants before Onigashima's descent on the Capital.