Just to toss in my idea...
I mentioned this to Durelin last night. I'm not too sure of the effectiveness it all, but it could be done. If certain contingents cannot post for certain right now, and the delay might thwart the game's timeline, those that can post could do a sort of time jump. Then, later, the Elves and Dwarves could perhaps 'relay' the event to the Eregion Elves, or whomever applicable. This could be done in one of those spiffy flashback sequences we see in movies.