I just need to know if they're going to recognize each other at least and know they're an ally who has good enough experience. If they only know each other on the surface, that's fine with me.

In terms of escaping, I expect they would want to find a nearby town. Would Lothering do the trick? I think however it may be too far for someone heavily injured, to reach. I'd purpose some tiny village of our own creation that would be somewhat close to Ostagar and possibly with some kind of outside assistance like a caravan or merchant being the one to sort of take a Warden there for treatment. I would think the following post would be either of them waking up and hearing another Warden staggered in as well and then we'd be able to have them converse and piece together the events that had taken place?