We just had our combo I-751 / N400 interview today (filed N400 May 1). The interview itself was very laid back and friendly, I didn't expect it like this. It was mostly small talk honestly. The officer had already read through our files when we arrived and said the application looked so well organized and everything well documented that she was very impressed. Didn't ask for any evidence that we brought, all she asked for was wife's GC, wife's passport, and our driver licenses. All that printing of papers and organizing for nothing lol
So after just some chit-chat and a couple questions, I-751 was approved. Officer let me stay for the N400 portion. The N400 related civics ( 5 Qs) / english question (write down something) were straightforward and officer was eager to approve my wife to be a citizen. Luckily, wife was able to do the oath ceremony two hours later and we left the building wife with naturalization certificate in hand! Really happy to have concluded this process and this interview experience was so nice and friendly!