Originally Posted by stubborn_d0nkey
You are not missing something, you are adding something. It says that their chakra was mixed; you added that it was Minato that mixed it.
Yes Minato did not do this Naruto did though it doesn't change the fact that all their chakras were mixed together...
Though you originally said Minato did not mix his chakras with Kurama's and Naruto's....but he did...just Naruto performed the act itself.