User blog comment:Ghmorello/Chapter 923: In Soviet Russia, Dragon Rocks You/@comment-202.90.134.147-20181105075650/@comment-30887974-20181107183541

I think its is just Luffy and Kaido wathcing each other.

Then there is a possibility that they both see the future, but Kaido is just faster to react, hence the shadowing over his eyes, not Luffys.