Board Thread:Versus Debates/@comment-43403813-20190907005521/@comment-9782468-20190923154821

@Flatzone, Sage Mode Sensing is the most powerful type of sensing in the series, so I'm pretty sure Naruto sensing Nagato was meant to give a feat to Sage Mode and not an inconsistency.

And whether or not it seems like it makes sense or not, Hinata and Kakashi both couldn't tell they were tethered by chakra with the Black Receivers. So it must be a property of the Six Paths Technique, to be invisible to dojutsu.

Also, I didn't see any indication at all that Itachi was sick at the time he returned to Konoha.