Board Thread:Versus Debates/@comment-32457608-20170702132834/@comment-6769189-20170714005812

Well considering the fact Kakashi's Sharingan had so much teouble with Zabuza's mist then the smoke would have blocked his vision for sure. Also if he was truly out of chakra he would have passed out or died since chakra is part physical energy. Most cases of "no chakra left" refer to such a low amount of chakra that they couldnt safely or successfuly execute a technique. And the fact that Itachi died immediately afterward shows just how little chakra he had left.

Kakashi advanced the Sharingan to Mangekyo so Itachi wouldnt have a problem advancing it considering he already knew the sensation.

Very few people knew the whole truth of Madara so his statement may not have necessarily been a deliberate lie.