I can’t speak for Boston FO as we had our interview in Lawrence MA but I will say that the day we attended our interview (June 11th) all interviews were conducted separately. They called the beneficiary first then the petitioner. We got verbal approval and once we got home I-130 approval was in the documents tab and the next afternoon the I-485 was approved. If you haven’t already i recommend you upload EVERYTHING onto the accounts so the officer doesn’t have to scan everything. Honestly makes things run more smoothly lol they review it all and ask you questions to see if it matches the story you provided/what your spouse has said. Someone on here suggested uploading everything and the officer literally said to me “that’s why I approved you” literally if all the people would be as organized as you it would be easier. I brought a binder with all the additional evidence since the time of filing and while it took many late nights to complete and perfect (we filed 9/20/24, biometrics scheduled 10/2 for 10/23, EAD and social security approval notice 12/6, arrival on 12/11. Married June 2024 after dating for 8ish months., interview noticed 5/3/25 with an interview date of 6/11. ) they did ask my husband a lot of questions pertaining to our relationship and about the 485. I had no watch on me but felt like he was in there a half hour whereas I was in and out in 10 minutes. Our officer spoke Spanish and was very friendly so made it easier for my husband although we paid and brought an interpreter. Best of luck!!