Coordinating list controls

I am trying to coordinate two list controls, on the same page, and not sure how to go about it. I would like to:
- have vertical list, list A, that displays, lets say, 10 labels on the screen
- have a second vertical list, list B, that displays a single poster on the screen
- the contents of list B should be the same as list A but because I am creating a view and list A is auto populating, based on it's id, it is not clear to me how to populate list B
- when list A moves from item N to N+1 list B should do the same
- when list B moves from item N to N+1 list A should do the same

hopefully that explains it. If not let me know and I'll try to provide more details Any suggestions would be appreciated...