Can pack formation threads be private?

I was wondering if there was any kind of information regarding whether pack formation threads should be AW or Private. With all the drama surrounding PHX and pack's setting up in the Emberwood and with NWF; it got me thinking.

From what I can tell, there's nothing to stop packs from forming solely from private threads and just ignoring any AW threads that other's make if there characters are unhappy with the pack forming. In my personal case, if all the NWF formation threads were AW I'd have FitzDutiful jumping into every single one of them to "stop" them forming. There's also a kind of time-scale thing too, there's nothing to stop people spreeing out their formation threads to "get it formed quicker" which then removes the IC drama from having other characters try to stop the formation. In my head, trying to oust a rival pack before they're formed should be easier than once they are formed.

So, yeah, is there any kind of info as to how to let other characters "air their grievances" so to say?