There's at least three separate pages on their site about it, none of which discussed how the two inter-relate so I guess they don't. Can both be used at the same time though?
BTW, I did spend at least half an hour reading it. With the Audyssey thread at 50k+ posts it is unweidly and I really haven't kept up over the last three years so I'm trying to catch up. I suppose I should have searched in there but it is a feature of the 2313ci so maybe somebody researching that model will pick up something here.