Embassy wait times

When NVC gives us the "documentarily complete" notice, do our consular processing cases get dumped into the same embassy interview line along with all other categories (nonimmigrant employee, student, tourist, and immigrant family preference etc.)? Or is there a dedicated line?

I'm unable to understand how this plays out. And I recognize that the correct answer to my questions may vary from one embassy to another.

[ https://travel.state.gov/content/travel/en/us-visas/immigrate/the-immigrant-visa-process/step-8-scan-collected-documents/step-9-upload-and-submit-scanned-documents.html ]

"If NVC determines you have paid the necessary fees, submitted the required immigrant visa application, Affidavit of Support, and supporting documents to NVC, you will receive an email that your case is documentarily complete and NVC will work with the appropriate U.S. Embassy or Consulate to schedule an appointment for you. NVC cannot predict when your case will be scheduled for an interview.

The U.S. Embassy or Consulate General tells NVC what dates they are holding interviews, and NVC fills these appointments in a first-in, first-out manner. Please keep in mind, applicants in a numerically limited (preference) visa category can receive an appointment, their priority date must also be current. You can track your priority date using the Visa Bulletin at https://usvisas.state.gov/visabulletin."