A center controller reported they handed off an arriving aircraft to an approach control and coordin...

Narrative:

While working the radar at the center; I verbally coordinated with the controller next to me that I would coordinate with approach; that approach can have control for descent on aircraft X who is landing at an airport just outside of their airspace. I called approach and told them aircraft X will be descending to 9;000 feet; their control with me. As aircraft X started to descend; aircraft Y; a C525; departed southwest bound climbing to 10;000 feet from another approach's airspace that would put him in conflict with aircraft X. I then called them and told them to stop aircraft Y at 8;000 feet and assign a 180 heading; to go behind aircraft X and to avoid the tfr area. I then called the other approach and pointed out aircraft Y climbing to 8;000 feet on a 180 heading and that aircraft X is still their control reference that traffic; and my control on aircraft Y. They said point out approved. As aircraft Y leveled off at 8;000 [feet]; aircraft X continued his descent through his altitude. Approach then turned aircraft Y further southeast bound to avoid conflict with aircraft X in the descent. With the approved coordination with both approach controls; I'm unsure of what form of separation was being applied or if all of the approved coordination was accurately relayed to the appropriate controller.

Original NASA ASRS Text

Title: A Center Controller reported they handed off an arriving aircraft to an Approach Control and coordinated a plan to resolve a confliction with a departure from another Approach Control but observed the arriving aircraft descend through the altitude of the departing aircraft.

Narrative: While working the radar at the Center; I verbally coordinated with the controller next to me that I would coordinate with Approach; that Approach can have control for descent on Aircraft X who is landing at an airport just outside of their airspace. I called Approach and told them Aircraft X will be descending to 9;000 feet; their control with me. As Aircraft X started to descend; Aircraft Y; a C525; departed southwest bound climbing to 10;000 feet from another Approach's airspace that would put him in conflict with Aircraft X. I then called them and told them to stop Aircraft Y at 8;000 feet and assign a 180 heading; to go behind Aircraft X and to avoid the TFR area. I then called the other Approach and pointed out Aircraft Y climbing to 8;000 feet on a 180 heading and that Aircraft X is still their control reference that traffic; and my control on Aircraft Y. They said point out approved. As Aircraft Y leveled off at 8;000 [feet]; Aircraft X continued his descent through his altitude. Approach then turned Aircraft Y further southeast bound to avoid conflict with Aircraft X in the descent. With the approved coordination with both Approach Controls; I'm unsure of what form of separation was being applied or if all of the approved coordination was accurately relayed to the appropriate controller.

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.

Attributes
ACN	1667628
Time
Date	201907
Local Time Of Day	1801-2400
Place
Locale Reference	ZOB.ARTCC
State Reference	OH
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Citationjet (C525/C526) - CJ I / II / III / IV
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 0.5
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

A center controller reported they handed off an arriving aircraft to an approach control and coordinated a plan to resolve a confliction with a departure from another approach control but observed the arriving aircraft descend through the altitude of the departing aircraft.