We know cannonically that Kaido intended to only make a move against WB when Ace was captured and set for execution. From what the manga told us was that messing with WBs crew like that was forbidden & taboo. Kaido knew this full well & went out of his way to interfere but was interfered himself by Shanks and stopped before properly doing such.
& now we have Roger who went out of his way due to Shakkys capture knowing that Rocks & his crew were already heading there....
& now we have Roger who went out of his way due to Shakkys capture knowing that Rocks & his crew were already heading there....