NTE - I'm afraid you are mis-quoting me, and whilst the debate is interesting, distortion adds nothing to it.
The Notice you refer to discussed the use of discretion and highlighted some existing CAA rules, and made it categorically clear that any decision to use or not use discretion was entirely the commanders. A commander is required to justify any decision to use discretion but does NOT have to justify a decision not to use discretion. Can I make it any clearer?
Secondly, I reminded everyone that you must NEVER exceed 3 hrs discretion, and suggested that if you did the CAA would have the CP's whatsits in a vice very quickly, and he would then probably want to share the pain with you.
The comment about the use of 2 hrs or 3, was highlighting existing CAA rules which only permit a commander to plan the use of a 3rd hour of discretion for the last sector of the day.
Kind Regards,
Andy