Warren Buffett knocks down reports that Berkshire's BNSF taps Goldman for a railroad takeover
1. Buffett dismissed reports of BNSF using Goldman Sachs for a takeover. 2. Berkshire will not seek advice from external bankers on deals. 3. Buffett emphasized disdain for expensive intermediaries in business deals. 4. Media reported BNSF explored takeover amid competitor movements in railroads. 5. Berkshire previously acquired BNSF for $26.5 billion in 2011.