the two divisions were competitors, and though I dont know for sure, I would think they never met to discuss marketing.
And I have always heard the challenger was the more "premium" of the two cars. It was priced slightly higher and had a little more cosmetic bling. And as we all know it enjoyed much better sales than the cuda, though both cars were blown away in sales by the other pony cars. But that is also why the cuda is by far the most rare today of all of them.
As for the subject of the topic though, we all correctly assume it is a clone, but a very nice looking one, dressed in probably the most popular color too.