Marlee Matlin made history by becoming the first (and still only) deaf actor to win an Oscar, picking up best actress for Children of a Lesser God. This year Matlin is not nominated, but her film Coda is up for three awards: best picture; best adapted screenplay and best supporting actor for her co-star and on-screen husband, the deaf actor Troy Kotsur (he’s the leading contender after trousering the Bafta on Sunday). On paper, Coda doesn’t look like a gamechanger.