How far did you get along with the story? I think you need to be at where you choose who you're going to the party with.
i have been at that part for a looong time. right now i have save right before choosing. (though i may have a bug there as i can no longer ask Chain after i encountered chil-rok, the option to ask simply doesnt appear anymore).
i also tried a few times after choosing (with dual for example) but nocturnal didnt react different at all.
Talked to Nocturnal before.
and did stryker in Boss Night work.
...but i dont think i have that "full Team at slates office" thing...is Slates office an actual added place or an event that is triggered? if it is triggered, who do i need to talk to? Slate or someone else?
i can meet slate in the neighborhood and in the winners circle bar but in both he has the same repeating events.
overall i seem to be missing the "new detectives in town" event. if its that.