Christopher Nolan, writer-director of the British war film Dunkirk, which bows from Warner Bros. on July 21, reached out to the exhibition industry today at CinemaCon to say how important the theatrical experience is to his vision of the film. His comments seemed to fly in the face of Warner Bros. president of worldwide marketing and distribution Sue Kroll, who earlier in the presentation warned attendees that consumers want other options outside of theatrical exhibition.