Just for fun, does the fuselage area between the wings add lift?
Great question. From a design standpoint, that area is considered part of the total wing area, so the answer is yes.
Flying wings are all wing (obviously).
A few years ago, there was an F-15 that lost an entire right wing half, yet managed to land safely. Lots of power and AOA is what saved that pilot. Oh, and I believe the lift from the remaining aileron helped. [8D]