hello Mje. I am sorry that your interview went that long. I was wondering whether the IO had giving you any paperwork on site, such as "notice of interview results". If yes, which item did your IO checked?
I went for my interview the day after yours. The interview went well, at least what I thought. During the 20 mins of interview, the officer asked limited amount of question and then he was telling us how to review GC later, and how soon I should expect green card etc. So I thought I got approved. But after I got home, I read carefully the paper he handed me after the interview the "notice of interview results", on the paper, he checked "your case is being held for review. At this time, USCIS does not require any further information or documents from you. Should further information or documents be required, you will receive a notice in the mail. ......." I so far has got no update on my case.. confused about my case status..