Board Thread:Theories and Speculation/@comment-36512555-20200101053037/@comment-34656247-20200409184803

Dodging has nothing to do with anything here. Susanoo was active after kirin was launched obviously which is what makes it a reaction feat, cuz there is still the part where he had to react, which Sasuke doesn't contribute to.. Itachi had other parts of the battle to complete (sealing orochimaru) he wasn't going to gamble his life at this point. If he knew he could'nt react to lighting he would've had up susanoo from the moment sasuke started explaining.