Check if brep is in area of other brepscr

Whats the best way to check in c# if one brep is inside the area of an other brep? i dont find any way.

I have add a 3dm file where i like to know if the trimmed surfaces are inside or outside of the big object.

intersection_test.3dm (114.9 KB)

Hello - I guess this may be useful

https://developer.rhino3d.com/api/RhinoCommon/html/M_Rhino_Geometry_Brep_IsPointInside.htm

-Pascal