Or sufficiently distracted.

Or that!

They anxiously wait.

Their backup gets updated on how this is probably not a job for a surprise army.

More waiting.

They fly on over and land outside the doors. 

There is conversation. There is hours of conversation.

Any of it getting disseminated in real time?

Nope. 

Then more waiting.

And eventually - we find ourselves unable to come to an agreement.

No. There had to be something.

What stopped it–

The Queen of Doriath would like anyone who enters her territory to swear that there is no information known to them which they have not shared with her and which might affect her assessment of whether they can safely be permitted to enter Doriath.

Oh. Of course. 

So, does your oath let you leave this for after the Enemy or did you just declare war on each other...?

We made no declaration of war.

But your oath is going to make you get the Silmaril back.

She stares toward the jewel. So small a thing!

I would be delighted to be presented with a better solution.

Get the other two first, kill the Enemy along the way, then Melian hands over this one safely.

I have a way to possibly do that but I am not sure it's even better than doing this.

Then in that case–

NOW!

There's a war, declared or otherwise. And here they are, in Doriath, without having fought their way in.

While the army starts up the chant of "Melian, I summon you," Amber and Findekáno can lunge for the Silmaril—

And find themselves outside the borders with more than a few broken bones. Stop that, Melian says, and I'm claiming my demesne.

Too slow, or not synchronized enough, or something—

Do stop, Amber sends out as soon as she's having thoughts besides the unexpected pain. Challenges are one on one, this would be cheating even if she doesn't know to call us on it.

Is that a legitimate declaration - 

She didn't say the 'I hereby make a claim, let this be my statement' thing, but I'm not going to bet on the spirits not knowing what she meant – 

If she finishes this, I doubt the Fëanorians have anything that could get in there. It'd be a siege.

Well, then the oath doesn't affect them. That works fine, I think.

Does that still hold if they're trying to get something that can? They might be able to break Doriath before Angband, and then we'd be right back here.

I think if they're both impenetrable they have more latitude about how to prioritize.