It’s a very prolonged flight and there are many people on board. Probably a heat washcloth now and then to freshen up So I did not rest to the flight. Also, the crew was probably understaffed mainly because it took quite very long time to choose trash after the food. https://bookmarksfocus.com/story4046725/how-much-you-need-to-expect-you-ll-pay-for-a-good-business-class-brisbane-to-london