While the flight isn't very prolonged, It can be a wierd (in an effective way) flying working experience that vacation nerds really should be dying to test.  Supper company on my night flight started about 20 minutes right after takeoff which has a very hot towel, beverage and blended nuts. https://businessflightshop.co.uk/blog/5-tips-while-you-book-business-class-flights-to-singapore/