An element contacted by an enemy front edge on its rear edge...cannot turn or move before it has fought the combat.
I think this is what I was looking for...... but I can't find it in my version 1 rules...... we shall use it anyway from now on
I take this to mean that having the warband hit the rear edge of the chariot locks the chariot in place, and the psiloi elements now have to conform to the chariot.
But the rules are still a littlebit unclear to me....... both Wb and Ps makes legal contact with Cv(c) in the same bound, whereas Wb has to confirm (extra 80p) immediatly after his movement tot Cv(c) and Cv(c) has to conform (extra 80p) immediatly, after movement of PS, tot Ps. The rule that you are refering to, Turning to Face, takes place
after all tactical or spontanious movement is completed, but before combat.
But as it seems it don't happen often, so I can live with your explanation
thanx