Thinking more on it, this discussion really is the pivot point for the entire story line, as you'd have people naturally explaining to the audience all the things we want them to be thinking about, from several different angles, in advance of any action or drama developing out of it. And if Galadriel has already told Celeborn about it it's an even more interesting argument, as she doesn't want them to know she spilled a bean or two herself.I'd imagine a furious discussion among the Finarfinians (???), with one of the As demanding the rest stick to Fingolfin's official story (I assume there is one?), Finrod refusing to lie but willing to say nothing, Galadriel telling the others they can trust her judgement (ie. answering by not answering), Orodreth silently watching/brooding, and the other A arguing that Thingol will surely understand that just the Feanoreans are the villains here.