Timeline within Timeline

Hello guys, is it possible to play a Timeline within a Timeline? I would like to create a Timeline of an whole scene that would play some animations also created with Timeline. I can't believe this would not be possible but when I drag a Timeline into an other one it just do nothing.

 

Add a control track and then add ControlPlayableAsset and reference the gameobject with the PlayableDirector for the other timeline, and it should do what you want (if I understood you correctly).

 

Let's say I have a Prefab with the Main Timeline and an other Prefab with a cube animated by a Timeline (which is also a prefab).

In the Main Timeline, I would create the ControlTrack/ControlPlayableAsset then link ... well I am confused here. None of the thing I tried worked. What should I link in Parent Object and Prefab for it to work? Maybe I just don't grasp how it should work.