Merging the cultures of the combined companies was problematic from the get go. Certainly the lawyers and professionals involved with the merger did the conventional due diligence on the numbers. What also needed to happen, and evidently didn’t, was due diligence on the culture. The aggressive and, many said, arrogant AOL people “horrified” the more staid and corporate Time Warner side. Cooperation and promised synergies failed to materialize as mutual disrespect came to color their relationships.