Good point. That makes sense now, at least for the time being and for the most part. And I also have to recall the instances where Sasuke used blue-white Chidori... But there are still a few things. Firstly, my same point about BSM Naruto flying retains. How can he fly without Rikodou chakra? Secondly, Sasuke used blue-white Chidori to destroy the meteor in The Last, right? How could he produce such a massive Chidori without Rikodou chakra. Is his own chakra really that powerful now?
I wouldn't have asked this if it was that simple.
Firstly, the confusion is whether Naruto retains his own chakra or not, or is it replaced by Rikodou chakra. Naruto retaining his former chakra solves the problem however. Secondly, you're wrong about RSM. Naruto doesn't combine Senjutsu with Rikodou chakra, he already has the Rikodou Senjutsu chakra by default, which he just access and enters RSM.