Actually, if you have enough e-Rewards points and more than one FFP or hospitality program account and somehow you have the option of having different brands as options (in my case it was DL, which I've entered from originally, got out of the program and had then the chance to put points elsewhere in the air + all the hotel chains if I wanted) you can put into several brands (1 acct. x program) in the same month, points permitting.