We all know that Naruto and Sasuke are way too OP with their sage powerups together they could stop Juubi Madara.
Look at Sasuke Susanoo, his are too huge and can even glide destroy meteors with one strike while Naruto can create as much Bijuudama rasenshirkuen with any Bijuu elements as much as he wants that would overwhelm Kaguya.
Which is why Kaguya would probably use Gentle Fist against these two since it was said to destroy any chakra substance, She would able to destroy Sasuke Susannoo and stop the chakra flows and cause internal damage, thus both Naruto and Sasuke cannot utilize chakra thus they`r crippled and powerless.
Look at Sasuke Susanoo, his are too huge and can even glide destroy meteors with one strike while Naruto can create as much Bijuudama rasenshirkuen with any Bijuu elements as much as he wants that would overwhelm Kaguya.
Which is why Kaguya would probably use Gentle Fist against these two since it was said to destroy any chakra substance, She would able to destroy Sasuke Susannoo and stop the chakra flows and cause internal damage, thus both Naruto and Sasuke cannot utilize chakra thus they`r crippled and powerless.