Board Thread:Episode Discussions/@comment-25319479-20180719110008/@comment-9782468-20180719191958

I always thought the wind aspect made sense in a way.

I felt that the Rasengan had some wind in it, but after being thrown the chakra couldn't sustain itself and dissipated. But since it used some Wind Release, I thought it still had a lot of momentum and force in the wind, it was just wind and no chakra at that point. So with a lot of force in the wind, but no chakra, Momoshiki wouldn't be able to see the attack coming with the Byakugan since it wasn't a chakra attack.

Changing the nature to Lightning threw my theory out the window lol