Q&A: Coen brothers respond to criticism over diversity, talk about 'Hail, Caesar!'

In conversation, as in their work, sibling filmmakers Joel and Ethan Coen are known for a kind of uncanny symbiosis. Their sentences run together as effortlessly as they divide the writing, directing and producing duties they have shared over the course of 17 feature films, beginning with their 1984 thriller, "Blood Simple," and culminating in their new satire of 1950s Hollywood, "Hail, Caesar!" So it seemed reasonable to ask, as they began a recent interview on a conference call from Los Angele...