Thank you! They interviewed my US Citizen spouse first then I was asked to join the interview. The interviewer asked me our full names, husband's date of birth, if he has any siblings, asked me if I had ever met his family, when last I entered the US (never traveled out since I was brought here as a child). I was also asked details about our apartment, asked how I met my husband, asked whether my husband has ever met my parents and siblings, I was asked their names, I was asked if we had ever taken any trips together. The interviewer asked us to leave some pictures from our photo album and also provide any documents that shows comingling. We had bills with our names on them as well as insurance documents. We were thankfully approved on the spot.

Good question, in my experience I went for my DACA biometrics in July 2014, then I applied for AOS in October 2015 but was sent to do my Biometrics in early December 2015. Around March/April 2016 I applied for another EAD based on my then pending AOS application and I was sent a notice that I would not need to go for another set of biometrics.