The art of pretending that something important that was spoken about was not discussed at all as the listner could not be bothered to pay attention.
Person A to an audience: Let me give you an update on Project Benri.... <goes on to explain for the next 15 minutes and then moves on to other topics>
45 mins later.
Person A to an audience: Any questions before we end today's meeting?
Person B in the audience: Can you give us an update on Project Benri?