Say Lufthansa is running a sale and I buy a business class ticket from Frankfurt to Los Angeles from the German carrier for $2,500. The routing is Frankfurt-Chicago-Los Angeles and back the same way and Frankfurt-Chicago-Frankfurt is operated by Lufthansa and Chicago-Los Angeles-Chicago is operated by United. Despite being Star Alliance codeshare partners and A++ joint venture partners, the price of the whole ticket would not count toward my minimum spending requirement because it would be issued on Lufthansa (220) stock rather than United (016) stock, correct? How United will prorate the cost of the Chicago-Los Angeles-Chicago (United operated) portions is a mystery to me.