Dey,
I'd prefer to avoid scripts, since eventually there will be random possible NPCs
Syhrus,
-Each character is in a separate faction, and each faction has a disposition modifier of -100 to the other.
Already Done
-Make sure there aren't any AI packages running on the NPCs that have the 'defensive combat' box checked (I'm not sure if this would actually affect it, but I have occasionally have NPCs refuse to fight because this was checked).
Tried with no AI packages at all and hit the same issue
-Both NPCs have a confidence of 100
Already Done
-Both NPCs have a responsibility of 0 (This is probably the one)
I *bleieve* it is done, but will check
-Both NPCs aren't engaged in a wander package that has the 'Must Complete' box checked (Again, this is unlikely to affect it, I'm just covering all my bases).
Shouldn't be, but I'll check
-I'm not sure if it has an affect on fighting, but bump both the characters' energy level up to 100. If you're only using these specific references for this part of your quest it wont be a problem later.
Already done
As you can see, I already have all the logical basis covered, so it's really odd why they will not fight... I have found if they are RIGHT ON TOP of each other, they initiate, but not anywhere before...