When Michael and Sollozzo change to speaking Italian in the restaurant scene, the subtitles Never get their dialogue. The discussion (translated in English) is inside the novel. It's a virtuoso stretch of filmmaking: Coppola delivers his huge Solid onstage so artfully that we are drawn simultaneously in the Godfather’s globe. https://bookmarklinking.com/story4962218/7-reason-why-the-godfather-master-piece-an-overview