It's working on completed models. It is not working on your separated object with no Shadows. Just reflection, and killing PT bounce within the house so I just see static direct lighting, which honestly you wouldn't see so clear from outside in the light. But meh. Might as well render SR windows that at least have some rake refraction screening, no? This is just broken. Most the windows don't even appear to exist due to lighting.And because there is still grain, you just have grainy screens in place of windows (like to keep flies out).
If you are going to separate objects, couldn't you just mask to the house and windows for a a higher quality PT? Object without volume will render fast, and then can get actual PT internals of the house with real bounce.
It's also weird that non lit trees are captured in reflections, but the building is. Only tree visible is the porch one, which reflects only shadowed object? I swear that's all you see on houses in relative shade, is all the sunny environment around, and lit trees.