Well, AFAIK 6 hours is the time before orders for air missions can be executed,...
The delay time between giving a command to an air unit and it lifting off base is 2 hours - not six. (v1.08).
I never stated any "minimum duration of any (air) combat", I said bombing and air combat in AoD can not be cancelled. It needs run until it completes.Where did you gather that this is the minimum duration of any (air) combat...?
AoD does not permit for the disengagement of aerial units until after they complete whatever controls the length of their engagement... so these combats can not cancel upon reload.
EDIT: "6 hours" relates to delay regarding acting on mission orders for land and naval units; and minimum land or naval combat time. (Naval units doing movement only have no delay, and - conversely - have 6-hour delay depending on the movement details).
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