Monk: Forbidden Chakra

[Atreides]

Their point is that if you were in a dungeon and the tank pulled, say, 3 mobs, you could 5 stack chakra, single target down the mob, then 5 stack again since you'd be "out of combat" due to only attacking one mob.

Thats not how combat works though, if one single party member is engaged in battle and you are in the same area you are incombat, no matter what.
If that wouldn't be the case Healers that don't dps would have an insane amout of Mana reg because they are not in combat.