Steph, I'm sure AIG uses the Bank to funnel and assist their insurance business. Banking on that level and insurance are comlementary businesses.
The AIG bailout was a Bush Admninstration deal anyway. Obama didn't get an inside look at the numbers but gave his tacit approval. Bernanke stayed on at the Fed of course, but Paulson, the architect of the deal was Bush's man, and he left with Bush.
The smelly part of the AIG deal is that the money was funneled through AIG to bail out Goldman Sachs among other Banks. Paulson worked for Goldman Sachs and in fact received a $18M bonus from them when he left to become Treasury Secretary.