Sentence 1: He has been instructed by Afrasiab to not let Sohrab kill his father , Rostam , so that they fight together and one of them recognize the other .
Sentence 2: He was instructed by Afrasiab not to let his father Rostam kill Sohrab so that they could fight together and one of them would recognize the other .

Do these two sentences convey the same information?
no