Can you pass a Collision2D to a parent object? (or to a group of objects?)

I would like to pass a collision to a group of objects, as if they were all rigidly attached to each other. Is there a way to do that in 2D physics?

My first thought was to turn each object's collider into a trigger, and then use the info in the collision passed into OnTriggerEnter2D() to somehow pass the collision to a shared parent object which would move them all. The problem is that OnTriggerEnter2D is passed the "other" Collider2D instead of a Collision2D. But if I don't turn the colliders into triggers, then each object moves and reacts independently of the parent object.

What I'm trying to accomplish is to have a collection of objects that act like one big object with one big collider interacting with the physics system, but I also want to kinematically move some of the components (in parent-local space) and add/destroy them.