A long wait feels different when you have arranged a whole day’s work around it.

A delay is never only the minutes on the clock. Around most appointments sits an entire structure: a day off, childcare, a bus at a particular time, a colleague covering a shift. When the wait stretches, the person is not merely bored; they are watching the arrangements they built start to fail one by one, which is why the frustration seems larger than the delay itself.

If people wait on you, tell them early when things slip, because the message is what lets them adjust the rest. If you are the one waiting, say plainly what your constraint is rather than sitting on it politely.