Deconstruct (explode) Brep

Hi,

I have another deconstruct Brep question here.

As in the image below, I've got this Brep in my GH definition and have an issue with exploding it.

I was expecting to get four faces from the DeBrep, but I got only one surface.

Is there a way to separate four surfaces from this Brep?

If I bake it, exploding works, but I need to keep the flow live in the GH file.

I hope I could get an answer from someone in this forum.

Thank you!

Dongyeop