Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-4080775-20200101234141

I agree with UltimaDude. Edo Tensei is known to literally allow the ressurected to respond to a given attack or situation in the best way possible and autonomously, so Keeping up with KCM Naruto that's not a feat for Itachi whatsoever. It's also not a feat because Naruto wasn't moving at his fastest while in said mode even if Itachi was to have control over his body at that point in time.

And yes, Kirin was very telegraphed and Susanoo can be activated in an instant. This was shown when Sasuke blocked Danzo's punch with Susanoo before it was visually manifested.