Well Para.
Picture an un-tired crew, facing their last flight home, who are a bit too high in hours to do so within the FTLs.
The situation is that the FTLs- which are there to protect them, are actually working against them by stopping them operating home, even feeling ok.
So a provision was made (exercise of Cmdrs discretion) to allow them to get home.
Now, for sure- Discretion CAN be employed here.
Question is, if a crew are too high to operate going AWAY from base- knowing it's the last sector (so they were never going to go home this particular night)- is it still appropriate to breach the FTLs by exercising 'Discretion'?
If so, what's the point of the FTLs (apart from at the rostering stage) in the first place?