How it went
#Interview in Warsaw. EB2-NIW
We applied as a Specialist in the development and implementation of IT systems.
The whole process from arriving at the building to leaving it — 2 hours. The appointment was for 8:40; we were already near the consulate at 8:20. There were already several people ahead of us. First you go to the window outside and show the interview appointment + passport. They give you a special card and you enter the building. You hand over your phone, go through the metal detector and enter the premises. This all takes about 15 minutes, since they let in 1–2 people from outside at a time.
Next you go to the immigrant visas area and “register” at the window, where they give you a ticket for the electronic queue. That takes another 2 minutes.
Then there’s the window where they check all the documents from the list that were sent to the NVC. Originals + copies + translations. The officer started speaking to us in Russian, but then smoothly switched to English. They also check the medical exam, which appears in their system if you take it at the IOM (International Organization for Migration) in Moscow, for example. They check everything super thoroughly and ask a few questions. Is this your first marriage? (Any previous wives/husbands). How many times have you been to the U.S. and what was the longest stay. They also asked me to write my mother’s maiden name — I don’t know why )). By the way, our case file was already sitting at that same window — literally printed out. This whole basic check takes about 20 minutes: you stand by the window and hand over the documents one by one, provide fingerprints. If everything’s ok, they tell you to sit in the waiting area and wait for your ticket number to be called to the adjacent window for the consular interview. You sit — you wait.
We waited about 40 minutes. Our case and documents were sent to the consul’s window and she also spent about 20–30 minutes checking and flipping through things while we were just sitting in the hall. She was preparing for the interview on her side.
Finally, we were called in for the interview. They also asked about the marriage and took fingerprints. Then the question went to the principal applicant: “Tell us about yourself — about your career in your own words from education up to now.” The consul spoke to us in English from the start. My husband began to describe himself in detail for about 10 minutes: where, when and how/for whom he worked, when he left/joined, what he did. The consul didn’t interrupt and listened very attentively, typing into the computer as she went. Then she turned to me, and I also talked about my education and experience, but not in as much detail — about 1 minute. All of this was also in English. She looked at us, didn’t interrupt, and these accounts didn’t seem long — exactly what she expected. After those accounts she had no further questions about our careers, so she didn’t ask anything else. So you need to be ready to talk about yourself.
Then she said that, unfortunately, she had to cancel our tourist visas because immigrant visas would be issued 
We relaxed))) “Your visa is approved!”
By the way, we had received the tourist visas in Kazakhstan a year ago after the I-140 had been approved, but we didn’t get a chance to travel on them.
Then she gave us a “new immigrant memo” and said that the visas would be ready in 3–5 business days.
Author of the story
Xenia (@xenia_tgm), from the chat @talentvisahelp. Original message in the chat.
Useful resources on the topic
All information about O-1 / EB-1A / EB-2 NIW
More success and denial stories: channel @o1eb1