Final answer:
The most important communication between the director and the editor while shooting is during post-production where they work closely together to select and edit the shots that best capture the director's vision.
Step-by-step explanation:
The most important communication between the director and the editor while shooting is during post-production. During this phase, the director goes through all the takes and selects the ones that best suit their vision for the storytelling. They work closely with the editor to make sure the shots are edited together in a way that enhances the storytelling and captures the director's vision. This collaboration is crucial in creating the final cut of the film.