[Yeah, he notices. But then again, Naruto is doing the whole future-spoilers thing again.]

Well, it hit him, but then he did some sorta healing thing, I guess? But then Gamakichi spat stuff at him and he couldn't get rid of that, so I use sage mode, and while he was busy mouthing off and being a jerk Uncle Second teleported me behind him so I could use my Rasengan with sage chakra? And then. I sorta woke up again.

I think that's how it happened.