I recall that it had an odd note, when it showed up in award searches, that it was subject to approval by the authorities or something like that. In hindsight, since it showed up as saver award space for 60K or something and I was only looking at it as the first leg of a connection on to Brussels, I should have booked it as saver and maybe gotten it then switched to the IAD-BRU direct when it fell through. (Instead, I booked KLM and AF saver awards with connections.)