Board Thread:Theories and Speculation/@comment-33485854-20180625233306/@comment-1512913-20180626211015

Of course Kaguya already had chakra even before she consumed the Earth's chakra fruit and it's not really a big assumption to make, since she had Byakugan which uses chakra. Not to mention she had to arrive on Earth somehow. Without charka, hardly, unless she did in a spaceship, which is more far-fetched than the former.

Also I agree with Kill on the fact that giving someone your chakra doesn't permanently grant them your powers. Sasuke got Rinnegan because of Hashirama's cells from Kabuto (which house Asura's chakra) and Naruto got his powers from having some from each Biju's chakra. And yes, I know that their powers were said to be because of Hagoromo, both are true. Hagoromo most likely just hastened the process in both and the reason why Naruto and Sasuke kept their powers is because they had it in the first place, Sasuke having Hagoromo's chakra (Indra's + Asura's) and Naruto having every Biju's chakra.

So in my opinion Hagoromo simply gave them powers for which basis they already had in their bodies, he just fastened and directed it himself.