When Lan and Demandred engaged in the duel, Lan notices that they are encircled by Sharans. He infers that this means Demandred is so confident in his sword fighting ability that he has forbidden his followers to interfere. Demandred's death is confirmed by the perspective of his Sharan girlfriend (or whatever). Then, somehow Lan is still alive, despite being stabbed in the stomach and surrounded by the enemy (some of whom held crossbows, while others were presumably Ayyad.) It seems like that aspect of the plot was seriously overlooked, because Lan would have been killed by Demandred's follow