Archie seeing the vision of Hector at his bedside on the day of the funeral and also when he tried to explain to Lexie, with tears in his eyes, how he wished he had known his father better, so many things unsaid.
Paul seeing Lexie off on the steam train. He felt so hurt, although I think proud of her for her decision. His face so taut. Molly seemed to understand with unspoken words.