He has already conquered Kurama chakra in turtle arc.
He can simply use it again by same method as he is far stronger and can use sage gates at his free will.
So now stop saying those low iq thing about Kurama lending Naruto chakra as if Kurama has any choice at all.
It was Naruto who allowed Kurama to fight with him, if not Naruto can just lock it down with Sage Gates and takes it's chakra again and again.
He can simply use it again by same method as he is far stronger and can use sage gates at his free will.
So now stop saying those low iq thing about Kurama lending Naruto chakra as if Kurama has any choice at all.
It was Naruto who allowed Kurama to fight with him, if not Naruto can just lock it down with Sage Gates and takes it's chakra again and again.