I suggest everyone slow down a bit on the posting through this patch. For those of you who haven't DMed a game online before, it can get confusing if several people interact with the same NPCs before hearing their response.
My suggestion: If someone asks something of an NPC - don't post any other interactions about that until the DM gets a chance to act.
Likely this is going to come down to initiative, with whoever wins acting first. So I could win initiative, prepare my spell, then either of the two questions (stand down or is there a toll) will go off. It makes for a slower game, but NPC conversation should be treated as battle and made with words like "I attempt" or "I try to" just like any other fight.
Oh, and remember not to assume that just because one of us posts something it doesn't mean our character actually does that. Wyrmy could easily say that my prepared spell doesn't go off, or that Gunky's tongue doesn't let him talk (because of some magic effect we might or might not know about). So just keep that in mind when we get into these back and forth efforts with each other during encounter scenarios.
And I'm guilty of it too, I know
Of course anything goes in PC-to-PC banter
