There are many depictions of winged quadrupeds (tetrapods with 4 legs and wings as well), such as griffins, dragons, and Pegasus. Often they have a rather plausible-seeming shoulder anatomy
Could this anatomy, with 2 shoulders on the back and 2 more beside the breast, support a set of 4 functional wings instead?
The anatomy detailed above is what this question is about. If you fail to mention this anatomy and explain if it will work, you have not answered the question
Specifically I'd like all wings to contribute in flight towards generating lift and thrust, and steering themselves. The wings should also be purely for flying, as in most birds
I'm most worried about issues with the lower pair, as they seem to be many problems with such a structure, and no real world examples to reference