American Express Membership Rewards - Bonus points for multiple businesses?

So I've gone through most of the useful bonuses on personal cards, and on business cards under my LLC.

As a backstory, I'm annoyed that I got ~35 - 40k less bonus points for having a Business Platinum instead of (or instead of in addition to) a Business Gold last year. Only consolation prize after complaining to Amex was 10k MR points. Not caring about a credit dip for the next while for a variety of reasons, I've opened a few extra accounts for bonuses...

Anyways, I've gotten the Delta Platinum Skymiles bonus under a personal card and under a card for my primary business (an LLC with its own EIN) in the past. Got the full intro bonuses for both.

I just recently got a Delta Platinum Skymiles card under a different business name ("<my last name> Associates".) Will I get full bonus intro points for this card, or am I not eligible since I got points from a different business? The card does show up under a separate business entity online. Amex did not have an answer when I called them.

(Also interestingly, I got an EIN from the IRS for my sole proprietorship, but American Express called me and we ended up taking the EIN off my application as I was applying as a sole proprietor and they don't like processing non-actually-incoporated entities with anything but your SSN.)

I'll reply to my own question if anyone's curious:

22 Mar 2006 Delta SkyMiles Credit Card BUS PL WEL 0 5000 5000 5000
22 Mar 2006 Delta SkyMiles Credit Card BUS PL ENR 0 10000 10000

So yes, you can indeed get the bonuses at least THREE times (as a personal card, as an incorporated entity, and as a sole proprietorship with your name on it, as I did.)

Now, can you get even more by declaring more sole proprietorships, or incorporating in those states where incorporation is extremely cheap? I'm not going to find out; I'm giving up on my experiment at this point since I don't want to trigger a financial review or other unpleasantness, but it IS possible to get at least 3x bonuses into the same SkyMiles account.

Also, I did get the personal SM Platinum ~2 years ago and the initial business one ~1 year ago; maybe being spread out over time helped. One might have more opportunity to be financially reviewed if opening accounts under multiple business/personal accounts at the same time perhaps.