Here's my guess: The two individuals wanted to open a business account for their LLC, but the LLC doesn't have its own EIN for some reason, so the new accounter decided to set it up using a DBA style so the SSN of one of the individuals could be used.
Wrong choices there, and as noted above, there could be other reasons for this mashup of account styling. Whatever it is, it isn't kosher.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8