Probably the same answer as I gave you on another board:
What was your basis for logging the time you weren't flying the airplane?
True, you can log whatever you want to, even the drive to the airport or time sitting in seat 23B on United 234, so long as it not fraudulent.
But the answer to what to log usually comes down to whether it can be legitimately counted for something having to do with certificates, ratings or currency.
Even if it doesn't fit into some other column (and it usually will), logged flight time should at least meet the 61.1(b) definition of "pilot time"
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(12) Pilot time means that time in which a person -
(i) Serves as a required pilot flight crewmember;
(ii) Receives training from an authorized instructor in an aircraft, flight simulator, or flight training device; or
(iii) Gives training as an authorized instructor in an aircraft, flight simulator, or flight training device.
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