Board Thread:Naruto Discussions/@comment-27662856-20180316054643/@comment-6769189-20180317105344

Neji vs Kidomaru wasnt a tracking feat. Neji is so fast that from his point of view Kidomaru's attacks things looked slow motion. This would not be a tracking feat. Neji actually failed to track Naruto's movements when he activated Kurama's chakra and failed to follow when Kidomaru dashed away into hiding in the beginning of their fight, only locating them when they came to a stop.

Neji was reading body language. It is very easy to tell how people are feeling and what they may be thinking by the way they sit, stand, etc. That is why Neji listed all of Hinata's movements such as what directions she gazed in, because these body movements and their meanings apply to most people. He had Byakugan active to better see these movements and for intimidation factor.

Hiashi could most likely see Hizashi's facial expressions, his aggression was written all over his face and Byakugan users don't typically activate their Byakugan unless they intend to go on the offensive.

If Byakugan could read minds, Neji would have also found out Naruto had Kurama in him and would have been able to stop Kidomaru from acting on his tactics and countered all his moves but neither of these things happened. Hyuuga would also be interrogation specialists as well as taijutsu specialists but this is not the case.

Again, in Boruto there is no evidence Hiashi had his Byakugan active and if it could read minds Naruto would have Hiashi read Boruto to find out if he was lying. This scene was for comedic relief.