B737-900
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 26
Communication Breakdown; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors; Airspace Structure; Procedure
The Denver Center 'controller' climbed Aircraft Y from FL330 to FL350 at the ZMP/ZDV boundary. Aircraft X at FL350 was approximately 10 miles behind Aircraft Y and 50 knots faster! We didn't notice Aircraft X's airspeed until Denver handed him off to us and we had already flashed Aircraft Y through to ZKC. We called ZKC on the land line to alert them of the overtake and issued ZKC control. Immediately after ZKC had communications of Aircraft X they turned him 20 degrees to ensure separation.Apparently nothing can be done. This has gone on for 26+ years and we just have to learn to live with it. Management has turned a blind eye to it; over looked it; even snickered at it and found it amusing in the past. Nothing can be done until an accident occurs and lives are lost.
ZMP Controller reported receiving handoff of two in-trail aircraft at the same altitude with the trailing aircraft rapidly overtaking the first aircraft.