Nathan

Does it really matter? Guest characters are just afterthoughts to the game, it wouldn't make any difference to the overall effect of the gameplay. So they might have had a specific intro dialogue if they were in the same game, that's it. It's not like they would have changed any of the overall story, they were just something that was cooked up while the game was in final stages of its development. There is no pleasing some people, all they do is complain about every little thing.