Minneapolis center controller reported that denver center would have given him a loss of separation ...

Attributes
ACN	1481221
Time
Date	201709
Local Time Of Day	1201-1800
Place
Locale Reference	ZDV.ARTCC
State Reference	CO
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Aircraft 2
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 26
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

Narrative:

The denver 8 controller handed us two aircraft at the same altitude. Aircraft X and aircraft Y were on converging courses at FL350. I called the denver 8 controller to reroute aircraft Y to direct bdf when aircraft Y was one minute outside our boundary. Aircraft X was 4 miles in front of aircraft Y. Aircraft X was flying at mach .77 and aircraft Y was flying at mach .80. If I hadn't initiated the call and given the denver 8 controller control instructions; these two aircraft would have lost separation within two minutes of crossing our boundary!recommendation: retrain denver center.

Original NASA ASRS Text

Title: Minneapolis Center Controller reported that Denver Center would have given him a loss of separation if he had not called them and fixed it prior to aircraft entering his sectors airspace.

Narrative: The Denver 8 Controller handed us two aircraft at the same altitude. Aircraft X and Aircraft Y were on converging courses at FL350. I called the Denver 8 Controller to reroute Aircraft Y to direct BDF when Aircraft Y was one minute outside our boundary. Aircraft X was 4 miles in front of Aircraft Y. Aircraft X was flying at MACH .77 and Aircraft Y was flying at MACH .80. If I hadn't initiated the call and given the Denver 8 Controller Control instructions; these two aircraft would have lost separation within two minutes of crossing our boundary!Recommendation: retrain Denver Center.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Minneapolis center controller reported that denver center would have given him a loss of separation if he had not called them and fixed it prior to aircraft entering his sectors airspace.