Im confused.
Are we suggesting - if a unit is within 12” of an enemy unit it can charge it in the hero phase, even if our unit is within 3” of another enemy unit (which we would have to attack?) and therefore (even if in combat with another unit) we can charge out of combat, into another unit, then retreat in our movement phase?
OR
Are we simply suggesting a tactic is to charge in the hero phase (get further up the board), then slingshot in the movement phase to an objective or other place on the board?