Void multikills (mainly from grenades, Nova bomb etc.) add only 2 secs of Abbyssal Extractor buff nomatter how many enemies you kill. Yo can kill hoard of 10 enemies with grenade or Nova bomb and still get only 2 secs of buff. And it's been for ages now. I think it's time to fix that especially since SoDA been nerfed to the ground. Please upvote for Bungie awareness.