Thanks appleblossom. There is no delay in my case until now, every step is under my control and processed under reasonable time frame. I chose AOS, but later I changed my mind, that's why I filed I-824 to request DHS USCIS to send my approved petition to DOS NVC for visa processing. I wonder anybody can share their timelines so that I can make a better schedule based on the timeline. I want to know the timeline between the case status of "case was approved" and "case was sent to department of state". My Case is processed at DHS USCIS TSC.