User blog comment:Raeji/Millia Rage/@comment-35611144-20180518054640/@comment-3391671-20180518102944

Likely "no," because the condition of second cast is to "remove the stun in trade of dealing damage." If removing the has no benefit of preventing the reactivation, why even have them be separate? It does come to the point that there is no drawback in aiming for close-to-maximum stun duration (1.4 sec), since the damage is the same throughout; making the damage scale with time leftover may not help, as it divides the purpose of the skill while making it overly flexible with no coherent reason why.