The weekly quest that rewards a bag containing a piece of champion gear when completing a Dastardly Duo is once per account, not per character.
This system does not make any sence since we have other systems in which the weekly quest is for each character in your account. Also, not telling that this is only once per account have led to that players that dont know about it will test the Duo event with a character that might not even need champion gear and cannot trade it to an alt.
In the Nightfall scenario we have a weekly quest that is for each alt, why not this event? What is the reason behind this change?