Exactly!! Naruto could not sense them! Meaning, there had to be someone sending chakra to the dead bodies with the rods. Naruto found this out when Pain stabbed Naruto with the rods and pinned him down, he felt Nagato's chakra messing up his own and the chakra had to be coming from somewhere else.This is really getting old how could naruto realize that the real one was not among them if he could not sense them. On a side its proven here in the link that they could be sensed because if they couldn't be sensed then how did Kakashi find one with a ocular power that senses charkaYou must be registered for see links
Kakashi is smart, he could tell that the destruction was just a diversionary tactic. Are you implying that Kakashi sensed that Pain? lol