Naruto was shown floating/flying in the moon not on earth
What's your point? The Moon still has gravity in Naruto, as evidenced by the fact Sai and Sakura landed on the surface with Sai's bird.
Naruto was darting back and forth as he clashed with Toneri, that's not mere floating, that is straight out flying.
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skip to 00:40
otherwise he wouldn't relay on Sai's summoning bird to fly around,
Geez, then let's have him fly around everywhere, why don't we? no more walking, just let him fly. it's almost like you don't understand that flying takes up more energy than just sitting on your ass.
rocks were floating around Naruto does that also mean they can fly and have rikudo chakra?
lol they weren't flying, they were sent to the sky through the impacts of Naruto and Toneri's attacks before falling back down, as evidenced by their slow movement. I can't believe your're trying to compare what happens at 00:40 in that video, where we see Naruto and Toneri moving at super sonic speeds, to what happens at 00:51, where rocks are sent flying into the sky through the impact of the battle and then start falling back slowly, due to the moon's lower gravity..
Hinata was given Hamura's chakra to destory Toneri's device threatening the earth thats it, Hamura knew normal chakra won't work that's why he gave Hinata his chakra to destory it, even Naruto's chakra didn't work thats why they combined their chakra
Your point? still doesn't mean she can't fly.
Kaguya was able to fly because of the god tree she consumed, Hagoromo being directly related to Kaguya and also being the juubis jin he was also able to fly
And Hamura was also Kaguya's child, so how do you know he didn't gain the ability to fly? Given that we saw Hinata was flying in the last scene after gaining his chakra, it's likely he can.