I’d be extremely surprised if you don’t end up in AP/DS-5535
The handling and duration of administrative processing depend on the nature of the case. The application may stay under review at the post with the consular officer who interviewed the applicant, allowing the officer to control the processing time. This often occurs when additional documentation, information, or time is needed to make a decision on a visa application.
In other instances, consular officers may be required to forward the case to the State Department in Washington, D.C., where the officer will not have access to information about the status of the case and lack authority to speed up processing. One indication that resolution might take a long time is when the officer returns the applicant’s passport at the end of the interview.
A Security Advisory Opinion(SAO) from the State Department in Washington, D.C., is required in cases involving national security concerns. SAOs are extensive biographic checks conducted by interagency partners from the intelligence community and law enforcement. They are a black box that can take months to years to complete, until the interagency partners, which are not disclosed to the applicant, provide their findings to the State Department. Consular officers do have the ability to follow up with the State Department about long-pending SAOs.