SIA had a 12hour min rest at Singapore, 10 hours at night stops for the so called "short haul", sleep was always an option at BKK on that one.
So called "Long Haul" had other limits due crew numbers and duty times etc.
Retirement is so much better, "Nana Naps" when tired after lunch, sometimes even with Nana bless her.
Fatigue management is a lousy cop out, just means you are legally tired, which you can't be as you have had minimum rest!!!