Faction - Illusion Question

[Teneran]

I killed a few guards in Nektulos on the bridge today and noticed something. I went in with DE illusion up and initially conned indifferent to the guards/corporals, even though I am a HE (agnostic) and max KOS with IndigoBrotherhood; exactly as I expected.

I killed two guards and when I conned the remaining Corporal on the South side of the bridge, I noticed he now conned apprehensive. This surprised me, I did take hits to DreadguardInner and DreadguardOuter (and IB but already max KOS) but I thought with DE illusion I would always con indifferent. Can I make myself KOS in Neriak even with a DE illusion by killing guards in Nektulos? I thought not but now I'm thinking yes.