Yep! It's a little confusing to write out. Basically, I have a 14x20 space to use, and if I put the coop on the outside I lose the square footage to the sides of the coop that could be run space. Here's a bad pic - dotted line is the allotted space.
The main thing with putting a coop inside the run is that you have to go into the run to tend the chickens. That's a bigger problem for some people than for others.