Datapoint:

I applied for the business card (50k miles, $150 statement credit, $3k spend in 4 months) in the first post on the evening of 2/4. Got to step 5 and was given a phone number to call (866-606-2961) with my application number. I was busy then got sick so I finally called today 2/8. I was told my application was approved on 2/5 and that I should be getting my card tomorrow 2/9 with a $1k credit limit. I laughed and then tried to move some of my credit from my other Citi personal cards to the AA business. Apparently I have hit the max credit that Citi is comfortable giving me and the CSR said that she could not transfer from personal to business. She did however give me the Citi business customer service number (800-732-6000) with whom she said I could try to increase my business card's limit. In the worst case I will be paying this card off very frequently.

One thing to note is that I was not asked for proof of address as I was the last time I applied for this card ~18 months ago. I wonder if this is because I had the product before. For inquiring minds, I do not have a "real" business.