I maybe overthinking it, but how does Naruto differentiate using Version 1, Kurama Chakra Mode, and Kurama Mode?
Like, I'm under the impression KCM and KCM2 work the same way Verizon 1 and 2 do. As in manipulating Kurama's Chakra and using them both in conjunction.
If he never used Version 1 or 2 again I could just chalk it up as they just don't exist for him anymore, but he uses it to block Sasuke's Amaterasu.