They find each other

Tsunade still hadn't heard back from Samui, or Anko, or Kurenai, or even Tsume and Hana. Surely that many of her best ninjas hadn't fallen?

"Damn that Sasuke," Tsunade hissed. "He has a remote that makes him unstoppable. But I can stop him myself."

And she would. For the good of her village.

Sasuke, meanwhile, knew this would not be an easy fight. Tsunade was the Hokage, and she of the remote, so he couldn't just cheese the fight by pausing her. But if he won, he could have every woman in Konoha under his control.

The two of them finally met one another and began the duel.