By the time the man in the bathrobe is done writing out the last group of numbers, Waterhouse is already well into his frequency count. He wraps it up as Bathrobe Man is saying something along the lines of "this might look like a meaningless sequence of numbers to you, but to a Nip naval officer it might look like something entirely different." Then the man laughs nervously, shakes his head sadly, squares his jaw resolutely, and runs through a litany of other emotion-laden expressions not a single one of which is appropriate here.