Peru need not just to win, but to win by a larger margin than Chile beat Canada by (if that happens). Therefore, active action should be taken already in the first half. That is why the corners will also go to Peru before the break.

Argentina has no reason to force the issue, as it is practically impossible to take first place in the group away from them. Squad rotation is quite possible. Overall, the Argentina national team is not particularly tall, so it does not rely much on crosses.