Static box collider and Nav Mesh Obstacle box

Is there any way to combine use one for other static box collider and nav mesh obstacle box?
I have a mesh which requires about 5 box colliders, and same amount should be applied with nav mesh obstacle boxes. Is it really necessary to add 5 box collider and then same size 5 nav mesh obstacles. It just feels wrong because of the overlapping boxes.

Maybe there is a way to use nav mesh box as trigger also or vice versa.

Thanks, have a nice day

I’d say this is by design. how to navigate and how to collide are two different tasks like moving and rendering. I wouldn’t want the overhead of collision if I only wanted bots to run around.