How to connect one skeletal mesh with multiple skeletal meshes?

I am trying to connect box1 with 4 cables and the end of the cables with box2.
All are skeletal meshes with bones. Connecting the cables with box1 is no problem.
I can attach one mesh to the parent box1 by selecting the right bone, but how do i connect box2 with all four cables?
i where trying with physics constraints but couldnt archieve what i am looking for.
Thanks in advance.

Did you ever figure this out or have a work around you could share?

Thanks!