"We now believe that a transaction between ABI and Diageo involving Guinness, could make sense for both parties," ISI's Robert Ottenstein wrote yesterday. (Recall that Robert is a former investor relations exec for ABI, for what it's worth). That's yet another variation on the ABI - SABMiller - Diageo - Molson Coors - Yuengling (wait, not Yuengling, sorry -- they wish).