Board Thread:Versus Debates/@comment-9782468-20160128040953/@comment-26369387-20160215215552

^ I don't know... In Japanese, Kakashi says this:

「もうオビトの意識を感じません・・・」, Mō Obito no ishiki wo kanjimasen...(I can't sense Obito's consciousness anymore...)

He didn't say anything about chakra.