Get cropbox from view when split views/breaks are applied

I have a tool that makes lines when structure is intersecting a cropbox of a section.
Now I want to expand it for section views that have view breaks or split views.

When using Views.CropBox, View.CropBox, View.GetCropBoxCurves, View.CropView I only get one cropregion, the “original” Cropview.

Does anyone know how I could get the cropcurves of split views?
In the image below is an example of split views. The red frame shows the result I get (4 lines) while I would like all 12 lines of the crop view.