that's what Oda wants you to think , remember when Zoro dropped from the Rooftop and started fighting King , Oda made sure to remind us that the Ryuma plotline is alive.
This is the most straightforward arc of all times , also Oda said Kaido wouldn't be defeated by a strong punch and he also said he wants to draw Wano final scene , is the final scene just some fucking shot of ships leaving the island.
SUSPICIOUSLY ACT 3 DIDN'T END YET , HOW DO YOU EXPLAIN THAT ?