It's likely a testament to Ed's general efficiency that his timing is pretty good, catching Oswald just as he's at the tail end of mentally chastising himself by the bathroom door when Ed announces himself.

For a brief second, Oswald feels an irrational wave of panic, like he needs to find a way out as quickly as possible, but it subsides quickly. It's not a great sign though, that level of heightened emotion making him that kind of jumpy. He'll need to get a handle on that pretty sharpish.

Trying to straighten himself out, or at least stand a little more upright, he opens the door again.

"Not quite. As ever, your sense of timing is nothing less than impeccable."