We probably need to check to see if Managers Perspective has a pulse with comments like that.
Anyone ( except MP) could tell you that a TOD of 20 hours does not mean you have been awake for 20 hours !!!!. Usually its more like 30-36 hours when you factor in the time you naturally woke up /jet lag etc.
We once diverted to Stockholm on a QF1 in the northern winter. TOD was 19:55. We were like absolute zombies. In fact, I still remember the crew were laughing and giggling all the way to the Swiss Cottage Hotel........and no one had a drink !!!! We were so zonked from the flight.......we were literally "off our heads".
So Dragger your point is a good one .......what if ??????
Studies in fatigue on shift workers have been done by the Uni of South Aust. But for some reason -QF Management "duck & weave" whenever the F- word is mentioned.
God forbid.....
we may have to pay the crew an extra allowance to compensate 
FOOLS
