General Battlemage

Physical Range of Battle Mage Auras Hey everyone, So I was just using my battle mage, and I did the kerning party quest with him for the first time. I noticed that the dark aura visual effect disappeared for the party members that were further away. Does the actual buff effect disappear as well? Or is it just that I can't see the visual effect if they are too far? If the buff does disappear...then how am I supposed to buff people during training if I would generally be at a far distance from my partner(s)? Thank you.