A quest for House Hlaalu in Balmora sends you to Ald-Ruhn, you have to pretend that you're a member of Redoran House (IIRC) and get some orders.
If you talk to the person who gives the orders without the helmet, she says "Thank you, Hlaalu, we shall change the codes."
If you talk with the helmet, she should think you're a member of her house and give you the orders. But if you ask about joining her house, she says "You cannot join, you're already a member of House Hlaalu".
Why did she give me the orders if she knows I am Hlaalu?
