I have my N400 interview in Chicago on May 17th and my I-751 is still pending with status of "Case was updated to show fingerprints were taken." My N400 interview notice doesn't say anything about a combo interview. Do you guys think it'll be a combo interview? Also how long after a combo interview do you get the Oath Ceremony day? I'm asking this because I'm planning to travel outside the US on August 2nd. I wonder if I'll get all the processing done and get my citizenship and passport by the time. Any replies are appreciated. Thanks!!