Here are some highlights from our San Francisco 49ers chat, which was held earlier Thursday:Ray: SF offense has looked pretty solid during the 5 game win streak with Greg Roman getting much of the credit for going back to the "basics". Now that it's midseason, how much has Eric Mangini's involvement as an offensive consultant contributed to this increased offensive production?Bill Williamson: They love him. They think he's been great as he basically serves as the devil advocate D coordinator in the room.