Puppet seal doesn't work like that. And by your saying What if Obito had done it to Madara?What if when Madara stabbed sasuke he put a puppet seal on him and that is how naruto vs sasuke will happen
how i may askif that's thee case .... Sasuke couldnt have just sliced madara
1.mabe the seal needs physical contactHe wouldve used it when he wanted to take Sasukes eyes.
Plus, Madara intended to kill Sasuke when he stabbed him, not manipulate him.