Use three-mesh-bvh to create compound spheres using Cannon-es

I think the title is pretty clear but I am going to explain it here too. I want to use three-mesh-bvh to create a collider for a mesh. If I am not mistaken, it should be much more efficient to use spheres rather that the convex geometry (Trimesh is a no go as it can collide with few things). So I though that I could use the bvh to get each “box” approximate a radius and generate a collider with that information. The part I am missing is accessing the data of each “box” of the bvh. Does anybody know how to?