Yes if Sasori protects only his heart Hidan never could get blood from Sasorii gotta say sasori hel find a way to cut up hidan to bits and hidan wudnt b able to get his blood so easily because hes a puppet and i think the only part of him that has blood in it was his heart thing
HahahaHe could control Hidan like a puppet and make him dance xd
Sasori is awesome!