My point was that this wasn't really 'an example of what Nekos can do' due to the context, so it doesn't need to be taken seriously. And yes, making two simultaneous attacks is not too extraordinary. Charging in, deflecting an attack, slipping through an opponent's guard to close into to said one-foot range before spitting in their face, grabbing, and throwing them, all at once, is well beyond that, to the point where it should only work against someone with combat paralysis... possibly not even one of Tolkein's Ents. That's what I meant by 'impossible', so we don't misunderstand it.
So, before we ask whether a samurai would be able to move so fast it strains belief, it would be good to ask whether they were actually moving that fast. In this case, I think both descriptions were hyperbolic, and I don't think that's uncommon. If we always took descriptions as fact, the destructiveness of weapons would be very inconsistent, too. It's not uncommon for weapons to be described as obliterating targets in one shot simply because it's more entertaining than writing an extended slug-fest, but that doesn't mean the targets are made of cardboard and nitroglycerine or that the weapons are necessarily capable of annihilating three feet of concrete in one shot.
What gets made canon is what actions are taken and the results of those actions, not the descriptions of how it happened. That gives us a lot more room for artistic license, and spares us from making tens of thousands of corrections that would diminish the fun without having a real effect on the consequences... At least, that's how I like to think about it, since I don't like to think we should actually do that much work.