'Stay behind a moment, would you? We need to talk.'
You can stay right here and talk to me if you have something to say; you wouldn't say anything they wouldn't need to hear, would you? 
mnli hypothesis: You can stay right here and talk to me if you have something to say; you wouldn't say anything they wouldn't need to hear, would you?  premise: 'Stay behind a moment, would you? We need to talk.'