Someone registers a DBA of "Bob Bobby" with the state. However, on the contracts, they sign as [legal name] DBA Bob's Services.
Or, they create a website called bobsservices.com, and on the website, there is an About section describing Bob Bobby, implying that Bob Bobby is the owner of the website/business, even though none of those are legal names, and only Bob Bobby is the registered DBA.
Should two DBAs be registered? Or does it not make a big difference? One person from another post suggested that there is no legal difference, only marketing concerns. I'm not sure how strict things are regarding DBA.