Further info, Outback has been sending me coupons lately, and one would figure that is a good thing
However, the coupon clearly states you can NOT use Dine Rewards if you use the emailed coupon
I use AARP discount in Outback, and later submit the receipt on the Dine Rewards app, so far that is still working
As always I buy Outback cards at about 30-35% discount, so it does pencil out well, with every 4th one being half price