Honestly, I would ask, is there any method to elongate battle time in RTW engine? not only 45 min - 1 hour, but also 2 or even 3 hours? the 30 min battle in RTW was designed with their vanilla acute cowardice of most soldiers (rout on contact, 4 morale) and with this kind of morale against peasants killing rate is like crazy, they'll last only 20 min in even matched field battle, so rarely lasts longer than 1 hour (except sieges)...