When the target of a charge flees, the charger may manoeuver as to try to catch the target !
Now we had this situation :
Cataphracts charge from the front some shooty mounted who cannot flee on their rear as it is a bit crowded . But the shooty ones can flee straight forward, going next to their chargers who pivot uo to 90° but may the pivot MORE than 90° as to follow the fleeing UG ? By pivoting 90* they could not catch them but 95% yes by a very narrow marging !
Page 132 L5 near the top is quite clear.
OK missed it