My interview was on August 23 and I got my oath letter the same day. After the interview, I was told to wait in the lobby and was given the letter afte about 10mins from the end of my interview. My oath is today, August 31, about a week after the interview.
My interview lasted about 15 to 20mins. Was asked to lift my hand and swear to tell the truth before I sat down. Was asked to confirm information about my identity like name, age and where I live and he went straight to the civic questions. Was asked 6 questions only cause I passed them all. I was also asked to write an english sentence.. all easy stuff. He then went through my file asking questions like how I came, if I had ever been arrested, how many times I was married, any kids (cause I'm married to a citizen), how long I've been married, if I'm part of any organizations etc.. Was asked to sign my pictures and put my signature on a few forms and was told to go and wait in the lobby.
He also gave me the welcome package and a form stating that I had passed the interview and civics questions.