I currently have a Gold Delta AMEX and want to apply for the platinum to get a nice bonus and enough MQMs to get FO. I've tried to search but can't turn up anything reliable about being able to get more than one Delta AMEX bonus in a year. Delta's terms and conditions seem to indicate that you can only get the bonus from each product once but isn't clear on getting bonuses from more than one product within 1 year.

Has anyone successfully applied for a second Delta AMEX and gotten the bonus (or even just upgraded--I wouldn't mind that either)?