So if I'm understanding correctly, in open world Thylex is up, you kill all the lords and ladies, and as long as Thylex is still up, then Vulak spawns. Is that correct? If so, how does NToV instancing work? Each dragon has their own lockout, so as you spawn a NToV instance, how does it decide when Thylex spawns? Only if it can spawn all the lords and ladies? Meaning to do Vulak, you have to get them all and Vulak within a 6 hour instance timer?
If you do not have a Vulak lockout, Thylex spawns when you open the DZ. If Thylex is up, and there is only one lord/lady spawned, and you kill that lord/lady, Thylex despawns and Vulak spawns. That may sound oversimplified, but everything else simply rests on those two pieces of logic. The differences between the DZ and open world are marginal. Any lockouts you create will affect the next time you open the DZ (ToV has a short basic DZ lockout unlike other DZ's), so you can strategize the order you want to pop lockouts if you want to spread your NToV clear out over multiple raid nights.
