The increased cash flow that can result from achieved synergies in a merger is one of the most pleasant outcomes for investors to anticipate. The shareholders of Restaurant Brands International (QSR -0.28%), parent company of Burger King and Tim Hortons, are yet to see this benefit, however. Business fundamentals are quite strong, so where is all of Restaurant Brands International's cash going? Click through the slideshow below to discover the culprit behind Burger King's missing cash.