Watch out GG and b sta: you could be in line for one of those CASA strict liability prosecutions and confinements to (Australian) barracks.
The rules are ‘clear’.
Or perhaps not.
The CASA definition of flight time in the orders is: flight time means the total time from the moment when the aircraft first moves under its own power for the
purpose of taking off until the moment it comes to rest at the end of the flight.
It does not state you have to 'take-off' merely that you need to be taxiing for the
purpose of takeoff.
For an ex FOI I thought you would have been pretty clear on that one (although I'd prefer not to cross swords with you). This is taught pretty much from day dot as a student and is accepted practice in every flying school/company I have been involved with.