Originally Posted by
CaptJOB
First you'll absolutely want to apply for the Premier before the PC of the AA card to the Double Cash. Citi can and has considered that PC action as starting the 48 month clock on SUB ineligibility for TYP products. At least that happened to me when I did an identical thing with an AA->Rewards+. Possible DC is different since it's technically cash back. I wouldn't risk it though. I'm sure others will chime in if I'm wrong.
A couple corrections. Each of the AA cards has its own 48 month rule (can't get a bonus if you have received a bonus on that specific card in the last 48 months). Certain TYP products (Prestige, Premier, Preferred, and Rewards+) have a family 24 month rule, where you can't get a bonus if you have received a bonus or closed any of those cards in the last 24 months. Double Cash, Custom Cash and AT&T cards earn TYP but are not included in this family rule.