Originally Posted by
Newgene
It was specifically around the higher portal pay out for people that have a registered Chase MP card linked to their account. I am not sure if you knew this but the portal should pay out a higher number of points per dollar for people that have that card linked.
What makes you believe that this is the case? Where do you see it documented?
AFAIK, the "extra miles" are just the miles you earn from the purchase itself, not additional miles from the portal. I don't see anything to the contrary on the website.