The Demolition team talent only triggers on Elite or Special kill. This is not described in the tooltip.
Ahh, so that’s why it never worked when I looked at it while murdering hordes in coherency, 8% chance for elite and special kills? That’s a bad feat.
edit: Appears to be 8% for each character inside the coherency aura. Makes it a lot better. Would still like to see 10% chance instead to give it more value to oneself.