i spent energy writing this so i'm going to post it anyway.
there is a brief playable scene taking place in a version of bookers apartment in a version of october 8 1893. a version of that date was when lutece came to get the baby.
there is ambient sound of the fan, a child's mobile, and an industrial grinding.
booker, cognizant of an "Anna" through direct or indirect memory, calls out to Anna in a hushed tone. the player controls movement and view. the only interaction prompt is with the side door. when approaching the door, Booker cries "Anna" inquisitively... as he has noticed the mobile music and wonders if she is in there, or if it is anna, or something else.
When the player initiates the prompt "open the door", booker slowly places his left hand on the wooden door and pushes gently.
the door creaks...
"Anna.... is that you?"
the player in the first person perspective gets a glimpse of the side of the crib, seemingly the same crib as the other shown version of october 8, 1893. A final musical flourish is initiated through the musical mobile, and the screen turns black before the door is open all the way.