These promos are all targeted.

I get the impression that they don't target most people with back-to-back promos. I've tended to get these targeted promos less than once a year per card in the past (to the point that my card was cancelled for inactivity while I was waiting for another promo, and I had to ask Citi to re-open it).

Yes, there is word on someone getting Q4 promos:

https://www.doctorofcredit.com/targe...s-for-october/

but these are probably people who didn't get a Q3 promo (at least not on the same card).