Netflix has been making overtures to movie theaters ever since it launched its bid to buy Warner Bros. Even after that deal collapsed, Netflix has signaled its openness to working with cinemas by deciding to give Greta Gerwig’s “Narnia: The Magician’s Nephew” a full theatrical release. It’s all part of an effort by Ted Sarandos, Netflix’s co-CEO, to signal that the streaming giant is not the enemy. But Dan Lin , chairman of Netflix’s film division, didn’t deliver the same message during a