As we passed out he exchanged a few words with the landlord, explaining that we were going on a late visit to an acquaintance, and that it was possible that we might spend the night there.
Viene de la ventana del centro. Al salir, Holmes intercambió algunas frases con el posadero, explicándole que íbamos a hacer una visita de última hora a un conocido y que era posible que pasáramos la noche en su casa.