CPR Y CLB THROUGH OCCUPIED ALT HAD LTSS FROM CPR X. SYS ERROR.

Narrative

CPR X AT 9000. CPR Y AT 8000 PARALLEL COURSES. CPR X GIVEN DIRECT PTW (ABOUT 310 DEG HDG) AND CLBED TO 10000. CPR Y CLBED TO 9000 AND TURNED HDG 360 DEGS FOR WX WHICH PUT CPR Y ON CONVERGING COURSE WITH CPR X. MY ATTN WAS DIVERTED TO ANOTHER AREA. WHEN I LOOKED AGAIN AT THESE 2 ACFT THEY HAD GONE ABOUT ANOTHER 5-7 MI. CPR Y WAS AT 8500; CPR X STILL AT 9000 ABOUT 5 MI SEPARATION. I IMMEDIATELY TURNED CPR Y L 270 DEGS AND CPR X TURNED R 360 DEGS AND AGAIN ISSUED CLB TO 10000. I CALLED TFC TO CPR Y; HE REPLIED HE WAS IMC. I ASKED CPR X IF HE HAD COPIED ORIGINAL CLB TO 10000; HIS REPLY WAS 'YEAH; WE SURE DID.' ONE CONTRIBUTING FACTOR WAS A SUPVR AT MY SHOULDER TALKING TO ME ABOUT SOMETHING NOT RELATED TO ATC AND SEVERAL OTHER ACFT IN THE AIR FOR OTHER FIXES. AT THE TIME OF THIS INCIDENT; I PROBABLY HAD 5-6 ACFT ON THE FREQ. SINCE THE 2 ACFT WERE ABOUT 10 MI APART WHEN BOTH WERE CLBED AND TURNED ON A CONVERGING COURSE; HAD THE CPR X BEGAN TO CLB WHEN INSTRUCTED TO; THE INCIDENT WOULD NOT HAVE OCCURRED.