As we learned recently, Berkshire Hathaway (NYSE:BRK-B) bought out Heinz for $28 billion. So, why wasn't Warren Buffett's preferred mergers and acquisitions bank Goldman Sachs (NYSE:GS) involved? In this video, Motley Fool financial analyst Matt Koppenheffer tells us who the three involved banks were, how they got in on the deal, and just how much Goldman missed out on, here.