During that conversation between Maggie & Joel about hunting a gentleman approaches them from the left. When the camera angle shifts from Maggie to Joel you can see him walk away. But when the camera shifts back again to Maggie he approaches once again and can be seen walking away once again when the camera switches once more.
In Dr. Fleischman's cabin, the clear plastic "Bambi" videocassette box alternately appears behind Joel on top of the television set and behind Maggie on a table.