Logged time
I recall we did a job one time that involved a 20 minute wait on one leg.
The bean counters decided it was better to just sit at ground idle rather than shut down and start up again.
A argument ensued about component time so we asked Sikorsky.
They said, "Running a 61 at ground idle or flat pitch full RPM generates no significant flight loads", so .... don't log it as component time.