The view from the window of Eddie's apartment changes from when Newell leaves and Joyce arrives. Different neon signs are seen in the distance.
After arriving home and being introduced to his wife's friends, Johnny punches his wife's beau in the mouth, then storms into a bedroom where the door is heard to slam, although it is seen to close softly.
In the Blue Dahlia manager's office with Leo and Eddie, the moving shadow of the boom mic is visible on the wall above Eddie whilst he is seated in the armchair.
Joyce tells Johnny that the tide is out. Clearly the tide is all the way in, completely covering the beach.