Baking AO on Room with Many Objects

Hello,

xNormal seems like a really useful tool and I am currently diving into it. There seems to be plenty of documentation and resources available on doing things like baking normals from a high poly to a low poly model, and it looks great.

What I am wondering though, is this tool able to bake ambient occlusion on walls / ceiling / floor in a room with many objects? Basically, I want to import the shell of my room all UV'd, but take into consideration all of the models that are on the walls, ceiling, and floor of my room when baking the AO. Is this possible?

Any help, tutorials, suggestions on how to do this would be greatly appreciated. Thanks!