Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-32685487-20200415194318

Kirin struck at 1/1000th of a second once Sasuke's hand reached the end of its motion. That means Itachi had 1/1000th of a second to get Susanoo up or he would have died. Whether he tried to predict it or not, that is still impressive as that is faster than the speed of sound. Also do you know how fast a human eye can blink? 1/10th of a second. The difference between that strike and that should show you how near instant it was.