Chancellor 414A / C414
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 5.0
Workload; Time Pressure; Situational Awareness; Distraction
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Company Policy; Human Factors; Staffing
I had two aircraft on V3 with being handed off from different sectors. There was an overtake that I missed. The reason it was missed was because of the overloaded sector. With multiple approaches going on at satellite airports; departures from both airports; and traffic alerts needed the overtake was not seen. At one point the supervisor come over and asked if I was ok; to which I responded no. No actions were taken to help; in fact a tower was calling the desk because I was forced to turn a departure back into their airspace due to them not delivering a clean aircraft; headed right at another aircraft. The supervisor came to ask me about this instead.  When relief finally came after I had worked the sector for more than 2 hours the supervisor came to check on the sector again. The relieving controller stated that the sector should be split. It was not. The loss occurred with the closest proximity being 2.1 miles and no vertical. Separation was regained after a second supervisor came over to ask if we were ok with the two aircraft and the trailing aircraft was turned away. High workload for a long period of time was the leading cause of the loss. Also contributing was a lack of staffing since there was no one that could open the position. The supervisor could not because none of the supervisors on duty are certified on the satellite positions.I recommend timely opening of positions; more staffing and requiring the supervisors to be checked out on more positions.
F11 TRACON Controller reported working a busy combined sector that failed to notice an overtake between two aircraft resulting in a loss of separation.