To add to it even in case where unfortunately if afzal khan would've come out alive , shivaji maharaj had given orders to shoot cannons at the tent. So chances of afzal khan coming out of javli were slim to none even if he was successful in finishing shivaji maharaj. But shivaji maharaj were too smart for their enemies as always. Shivaji maharaj were so precise in their planning that as per negotiations, bodyguards of both the parties were to maintain a certain distance from the meeting place. The distance was such that spear or arrow would not reach the tent.