no spoilers right?! hmmm lets see before i knew what happened to them this is what crossed my mind. after their fights i think without a doubt Neji is dead. Chouji was a real question since to me it just looked like he used all the energy in his body to a point in which he can't move. Kind of like Naruto and Gaara after they fought they couldn't move after their battel so I definitely think Chouji is quite alive.

The most interesting part that makes me think that they possibly could not be dead is when Kiba who is hiding from Sakon and Ukon sensed something was coming. Then we see a bunch of shadows moving and you kind of wonder who are they?