Obviously Kaguya doesn’t need backup to own the duo but still, how do you think she would’ve used the Zetsus to combat the duo?
Assuming that she’s smart enough to use them this way, she could feed them a tiny portion of her chakra and have all of them turn into her. The Byakugan can’t differentiate a Zetsu copy from a real person. Then the Zetsu spores can be planted onto Momo and Kin, and thusly drain them of their chakra.
Assuming that she’s smart enough to use them this way, she could feed them a tiny portion of her chakra and have all of them turn into her. The Byakugan can’t differentiate a Zetsu copy from a real person. Then the Zetsu spores can be planted onto Momo and Kin, and thusly drain them of their chakra.