Unity - loading next scene doesn't trigger timeline to start

Question

I've got an exit button that loads from the main menu to the outro scene. The scene gets loaded but doesn't start playing (playonawake is on). I'm using a timeline in the outro scene that displays a few sentences before quitting completely.

This is how i load my outro:

public void Outro()
    {
        SceneManager.LoadScene("OutroScene");
    }

Then in the outro slide this should load: Timeline But it doesn't start playing, it just shows the first sentence.

I was expecting that the timeline start automatically when the scene is loaded.