Bookend: Uncle Harold has pneumonia.
I always think of the bookend of this scene as being the divorce scene, because there are similar elements: the contact from someone far away that leads to a journey, the "Here I am," the gaze to a distant person that Jack follows, gradually comprehending.
But Uncle Harold's pneumonia is such a mysterious and complex augury! So I'll look forward, Barbara, to seeing what you have in mind.
Meanwhile, I'm throwin one in that I noticed yesterday. It might be more of a mirror, though.
Mirror: Ennis packs up his horse for his first night on the mountain, Jack warns him he won't get any sleep.