Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-32685487-20200103092653

the natural lightning that is Kirin reaches the ground in 1/1000th of a second, and black zetsu says so in the manga too. Itachi was already just about blind at this point and his reaction speed was greater than 1/1000th of a second and that is a feat all in its own.