"Qavion, the 733/734 A/T will retard automatically at 27ft RA (from memory), even on a manually flown approach."
Thanks (again), Eckhard...
After some extra reading, I see that there is an "OR" logic gate in the A/T idle command.
The throttle on the 733/734 will retard 0.8 seconds after Autopilot flare (with A/P engaged) OR....
".... at 27 feet radio altitude if the Autothrottle is in speed mode and the flaps are greater than 12.5 units."
Cheers.
Q.