Lost time and lost landscape
While sitting at a meeting Stephen daydreams about a lost time and compares the gray view of car-park with the view he had as a boy in his school-days of rose garden, of uncultivated wild landscape, of trees and vivid blue of the river. He knows that this landscape is lost and only exists in his mind. It turned into a cultivated land, with trees gone and motorway bridge built. He is more aware of this loss as the idea of loss itself is very close to him.
Silence
Stephen returns one day home after searching for Kate to find it empty. He slowly makes himself sit in the chair Julie always sat after Kate disappeared. He keeps his gaze directed on the one same spot Julie did and spends hours that way. Sitting like that in silence, he feels something slowly gathering, a realization, an understanding of the true weight of his loss. It is only in the silence that he finally become aware of what happened to him, everything before was only avoidance of that silence.