Yeah you using that scan really did nothing for your argument.And here's where you lose your trump card. Ukon/Sakon himself stated this.
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"You do know that the passage of Chakra is heavily interwoven together with your organs, in other words these passageways interact heavily with your organ tissues and even the protein that makes up most of your cells. I can deconstruct and reconstruct these cells and proteins at my own will".
What can see the chakra points and passageway of chakra? Byakugan. This cements my claim that Neji would be able to see them with his Byakugan. And since Neji can see them, he would be able to repel them using his chakra which i have been saying for the last day. If they still somehow manage to merge(which i definitely don't see happening now) then he attacks the chakra points Sakon/Ukon are at and causes fatal damage to them and not to himself. Which you have also been ignoring for the past day.
Your move.
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All he's saying there is how he kills his opponent.
When he breaks himself down and enters the opponents body isn't even mentioned in that scan. Which is why you cut off the top of the scan when he gives the entire context for the portion you posted. He's explaining why his technique is specialized for assassination.
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Trying to pull one over lmao.
You could say that Neji could see them killing Neji, I guess. But when we get to that portion, you'll see why it doesn't matter if Neji can see them killing him or not.