You say that you are only interested in author/illustrator submissions. One of us is an author and the other an illustrator working on the same story. Does that fall within your guidelines?
That’s OK with us, but can be tricky. If a publisher likes the text but not the art they would likely want to commission their own illustrator. But there’s a lot of hurdles to jump over before that (ie, do we see potential in it in the first place), so happy to take a look.