Its possible Yamato was sent by kaido to capture Ace when he intruded in wano . I can see both of them fought and recognized each other strength .
Maybe i just dont see Ace casually chating about luffy to a stranger especially to an unknown pirate . She found out from newspaper and made connection to it .
I am interested if she played a role in bringing beast pirates to Ace execution ? Make all coincidence puts to rest how shanks mangaed beast pirates because there was no kaido at all ?