Yup. I wrote a pretty convincing (in my opinion) argument for why Goku COULDN'T have given him chakra (...connected to the Demonic Statue, etc.). But I think we have to chalk it up to a "deeper" connection between the bijuus and jinchuurikis that we saw in this episode.so goku did give naruto some chakra
I highly doubt it is just chakra, though. Strengthening the bijuu/jinchuuriki connection has to help out in other ways...perfect the bijuu transformation, perfect bijuu dama...
But what I'm wondering is what information they've provided Naruto (if any) about the Sot6P. While I do believe Naruto is the one the Sot6P predicted, I do not believe the theories that he is an exact reincarnation and, therefore, automatically will get Sharingan/Rinnegan (which would just be ridiculous and OP). Maybe (probably) a descendant.
I guess we just have to wait and see what being "entrusted with their [bijuus'] souls" exactly means.