It was a remembrance more than just a dream, enhanced and romanticized with all the bad parts edited out. The Winter Soldier sneaking in through her bedroom window all those years ago, the night before she was sent away to marry the test pilot Shostakov.
Bucky wonders whether Natasha is conscious of him looking at her. She turns to face him, with one of those looks that seems to strip away years and overlay old memories. He finds it disconcerting. He breaks the gaze and looks out to sea
Tony sends me out into the cold to find the Winter Soldier figuring it takes a spy to catch a spy and all that... only I'm finding nothing but dead-end trails