Lift Produced Where Wing Transects Fuselage

[balsa model]

In my naive wing model, it goes like this:
The extant fuselage length, trailing behing the wing box, interferes with the development of lift vorteces from this part of the wing. No vortex, no lift.

Lifting body would not be a counter-example because in that topology, the fuselage is not really trailing. The lengths are balanced.

(Definitely waiting to be corrected - I'm still mentally struggling with the role of viscosity - I know it's essential)