How to break down a geometry collection mesh without using fracture?

As you know, when you fracture a geometry collection, all unconnected meshes are registered to separate bones.This is an annoying feature, but it can be useful if you want to subdivide the mesh beforehand.

However, conversely, intentionally causing this requires performing a fracture.How can I add separated meshes to a collection without performing unnecessary fractures?

As explained in another thread you can uncheck the “Split meshes” option when creating the geometry collection

See screenshot below :

Ced