The response, the explanation, either and both at the same time, got a singular nod from Kay, because that was the only answer necessary at the moment.

The actual question, however, did get an answer: "A few hours, more than four, almost five." Which he didn't have to say was longer than Cassian usually managed at a stretch, they both knew it and it was the kind of thing that didn't really bear discussing unless it got much worse than that, which it had, on occasion.