Divine Dazzle only transform ranged creatures into melee during 8 seconds.
Chivalrous Challenge transform ranged creatures into melee during 16 seconds and changes their target to the caster during 6 seconds.
Paladins must use Divine Dazzle only if the ranged creatures are target at the knight nad if there is space at the box while Knight might use Chivalrous Challenge to take the creatures which are attaking the shooters.
Another way is to use both spells in sequence, this way you will maintain the creature into melee longer, for example, when we are running for the box spot at True Asuras, I use Divine Dazzle at True Frost, after 4 turn the kinght uses Chilvarous if necessary to keep her at the box.