Board Thread:Boruto Discussions/@comment-31377229-20180125162054/@comment-17623-20180130143847

Chapter 230, I dunno the page. Naruto vs Sasuke. Once Sasuke's sharingan progressed to Stage 3, he could see exactly where Naruto would be before Naruto even got there. This is what I meant when I said, they basically can see the future. I did not mean they could literally and know your fate like Nighteye.

One thing to understand is that the tunnel vision and the inability to react are not completely linked. Just because you solve one issue, doesn't mean the second problem is also solved. The Sharingan's ability to 1) nullify the tunnel vision and 2) predict exactly where the opponent will do before they do it is the reason why the Sharingan is required to make the Chidori not a danger.

Just having the Byakugan solve the tunnel vision, but not the ability to practically see the future and allow the user to react to things that didn't happen yet, means that the Chidori still ends up a flawed and risky technique.