Macau's two biggest gaming moguls Stanley Ho and Sheldon Adelson held a secret lunch in a private ballroom at the Venetian on tuesday. The bitter rivals, who in the past have exchanged strong accusations, had a 'social lunch with no particular business agenda', a Las Vegas Sands (LVS) source told macaubusiness.com. However we understand the two men had plenty to chew over as they sat down for the meal.