Topologic CellComplexes from Space Geometry - Issues with double wall seperated spaces

Hi, I am just wondering if anyone has created a cell complex from space geometry within a building where the spaces have been separated by two walls (i.e. leaving gaps in the geometry of the building)? I have followed the below video from Gavin Crump / Wassim Jabi (thank-you for doing this by the way), but in the example there is only one wall separating the spaces. Topologic Cell Complexes in Dynamo (ft. Wassim Jabi, 2 of 2) - YouTube Thanks in advance!