Collision detected by the collider but not by the rigidbody

I have a root object which has a rigid body but not colliders, inside it, there are various objects with colliders attached but not rigid bodies. According to this document, the collision is reported to the collider/rigidbody. As I understand it, in this kind of setup, you should be getting 2 notifications per collision, one for the collider and one for the rigidbody, but I’m only getting notifications on the colliders. So… am I misunderstanding the documentation or is there another problem I’m not seeing?

Hi,

Have you watched this?