The conversation has ended. One character leaves, but the film stays with the person who remains. That extra stretch of screen time can make the goodbye feel less final than its words suggested.
Instead of immediately naming an emotion, describe the action that continues. A cup is moved. A coat is picked up and put down. Somebody looks toward a doorway that is now empty. Small actions can support several readings, so keep the description precise.
Imagine the scene cutting on the spoken goodbye. Then compare that imagined ending with the actual one. What information, rhythm or uncertainty exists only because the shot continues?
The comparison does not tell you which edit would be better. It helps you identify the work done by time after dialogue.
Pay attention to sound as well. The departing person’s footsteps may continue, a room sound may become noticeable, or music may arrive after the verbal exchange. Write down the sequence rather than describing the whole moment as simply quiet.
When discussing the scene, identify where you consider its emotional ending to occur. Another viewer may place it earlier. That disagreement can reveal which detail each of you treated as the decisive one.