Hey y’all,
I had a similar experience at a field office in the northeast on 12/12/22.
We didn’t know to request a combo interview, but my spouse and I presented together just in case. The officer told us that there were two files on her desk (I-751 and N-400), and that she would need to speak with my spouse for the first application.
She asked for our drivers licenses and my passport. The I-751 portion was questions directed at both of us about our history. After that, my spouse was given the option to leave, or to stay present but silent for the duration of the. N-400. Some of the questions that were asked during the I-751 were asked again. No documents were requested. The civics questions were some of the easiest on the list. I got a document saying I passed the test. We were told that the I-751 would be approved, and the N-400 would be approved the following day, as the I-751 approval is a pre-requisite for N-400 approval. Two days later, I-751 status is approved on MyUSCIS and N-400 hasn’t updated yet, but we anticipate this changing soon.
From filing to approval, I-751 took about 20 months, and N-400 about 7 months.
Good luck to you all!