My timeline:
Eb3, priority date June 2002
RFE on 485 for self March 2005, spouse a couple of weeks later.
Replied to RFE beginning of May. Received notice on June 8 that our case was transferred to Cincinnati, Ohio
Made infopass appointment to visit Columbus and was told that Cincinnati was the office that received files from the service center and that Cincinnati would forward the files to Columbus.
We had our interview today in Los Angeles at 10:35 am. Up to now, I'm still a bit confused and worried whether or not my Green Card has been approved. The officer simply told us that he has to wait for a background check (without looking into his computer) before he can make his final decision. He says it usually takes 30 days. He also didn't discuss anything about conditional status. However, there was no sign of doubt on his side when we presented our evidences. In fact, my husband and I felt that the interview went well.