[realzed]

Yep - only ever available through and at Pontiac dealerships - that's good enough at least for me to call them Pontiacs. They carried exactly the same Chevrolet running gear and major sheet metal (but grills and often taillights and some side trim was often or usually different) plus the seats, dash pads, instrumentation and layout, and often side trim was different and usually flashier like most Pontiac models were over their Chevrolet equivalents at least here in Canada..
They were always if advertised referred to Pontiac Acadians and Pontiac Beaumonts - no mention of Chevrolet ever when I was a teenager - so Pontiac has and always will work for me!