After my SDC experience on Thursday morning it seems like the SMS and chat interfaces are likely the same on the AS res end. Strangely, there were at least three agents on my text string over the time it took to SDC to a coterminal. And, at the end there was a sign off message of "your chat session has ended" which wasn't there in Nov the last time I used 82008. Maybe someone at AS or with more computing powers can confirm or deny.