Bab 1571: All It Takes Is A Second To Turn The Tides

Grey and Klaus didn't need to communicate with each other while the switch was taking place, from the first time Klaus appeared, he already knew what Grey had in mind.

Grey and Klaus were different individuals and their attack pattern was different. The lady was trying to get used to Grey's attack pattern, so with Klaus suddenly appearing and unleashing an attack from a different element and angle, she was forced to take those attacks before having to deal with the tricky Grey.

The lady soon understood her plight. Not just that, but due to Grey and Klaus switching repeatedly, and the lady not being able to stop them from destroying her puppets, the puppet Klaus was fighting with had lost both arms as well as a leg. With just one leg left, there was no way it could fight properly against Klaus who was stronger than it is.