So i'm fooling around on my Drg and trying to use the B4B>Heavy Thrust>Power Surge>Life Surge>Jump combo. I was doing it pretty well so I tried modifying it a bit. I came up with B4B>Heavy Thrust>Power Surge>Impulse Drive>Disembowel>Life Surge>Jump. Problem here; apparently Drg can't combo Impulse Drive and Disembowel. Is this True? I grabbed a few mobs and only spammed the two and never got a sinlge combo. The reason I wanted to add this combo is for the extra piercing dmg you'd get. Any help would be greatly appreciated. Am I right that you cant combo these on Drg?

Thanks for your help!