Yeah, I'm still not sure, through no fault of your own. None of those examples prove what I'm asking. The only think I can think of that would do that, is if someone someone got to attack the "real" naruto in such a way that it floored him immediately or otherwise made him unable to sustain the shadow clones, and they all disappeared. I don't think we've seen such a thing.

Like, the cloak example, assuming there is no real Naruto, any clone could draw up the kyubi's chakra, and then all the other clones would disappear. This leaves whatever clone that drew on the kyubi chakra to be the "real" Naruto. The Naruto and Sakura example doesn't really prove it either. Why let Kakashi kill a clone when it's no sweat off his back to avoid the attack completely now that he's created a clone? Similar reasoning puts the other examples on weak footing.

So yeah, the question more precisely formulated is: Assume Naruto creates a single clone on a field and there are now 2 Narutos. Is there a Naruto in this situation that should he be destroyed, Naruto himself would be dead? I'm not sure we have an answer to this yet.