Those who got shut down from BOA did you have a checking account? Were these your first CC by BOA? If no, did you have big balances on your other BOA CC or on any of your other CCs? Anything else you can think of that would be a trigger?
IMO, signing up for 2 cards with a targeted offer or even 2 cards should not be a trigger. Just like with chase A/A, there is always more behind the blank screen.