![Leo Burnett and DDB tipped to swap big bank clients](https://cdn.i.haymarketmedia.asia/?n=campaign-asia%2fcontent%2fa123bank-of-china-logo.png&h=570&w=855&q=100&v=20170226&c=1)
Senior executives close to the banks informed Campaign Asia-Pacific about the results of the two ptiches, which were called in June.
Leo Burnett was the long-term incumbent on the Hang Seng Bank creative account, while DDB previously worked with Bank of China on a project basis. DDB did not participate in the Bank of China pitch.
A source said the winning agencies had been notified, but added that contracts have not yet been "cast in stone".
DDB declined to comment.