DivideAlongCreases + SplitAtTangents?

Still struggling in GH with this one. I need to be able to perform DivideAlongCreases + SplitAtTangents either on geometry generated by Grasshopper (since there’s still no option for splitting at tangents when extruding in GH) or on referenced geometry. DivideAlongCreases_SplitAtTangents.3dm (484…