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

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CPR X IFR DEP FROM GTR. CLRNC WAS: CLRED AS FILED; MAINTAIN 2000 FT; EXPECT FL230 3 MINS AFTER DEP AND EXPECT FL350 10 MINS AFTER DEP. FILED RTE WAS GTR DIRECT IGB J52 TOWARDS GREENWOOD. COPLT MADE THE TKOF; TURNED DIRECT TO IGB AND LEVELED AT 2000 FT. CAPT (PNF) WAS TALKING TO DEP. CLRNC WAS RECEIVED TO CLB TO FL230. CLB WAS STARTED AND AS WE CLBED THROUGH 6600 FT; DEP ADVISED US TO MAINTAIN 6000 FT. ACFT Y WAS 12 O'CLOCK; 7000 FT; LESS THAN 1 MI. CAPT ADVISED DEP WE WERE AT 6700 FT DSNDING TO 6000 FT. AS ACFT DSNDED THROUGH 6500 FT; DEP ASKED US TO MAKE A 'HARD R TURN NOW.' WE MADE A HARD TURN AND LEVELED AT 6000 FT. DSCNT WAS MADE WITH PWR AT IDLE AND A FAIRLY ABRUPT PUSHOVER TO STOP THE RATE OF CLB THAT WE HAD WHICH WAS 3000 FPM OR MORE AT THIS TIME. ONCE CLR OF TFC; DEP AGAIN CLRED US TO FL230. THE OTHER ACFT INVOLVED WAS BELIEVED TO BE ON ANOTHER FREQ AS WE DID NOT HEAR ANY XMISSIONS TO THAT ACFT. AFTER RECEIVING THE CLRNC FROM CLRNC DELIVERY; THEY ASKED WHAT OUR DIRECTION OF FLT WOULD BE. THEY WERE ADVISED DIRECT TO IGB THEN THE 266 DEG RADIAL. THEN ON DEP; THE CTLR ASKED AFTER IGB WHAT WAS OUR DIRECTION OF FLT. AGAIN; WAS ADVISED IGB 266 DEG RADIAL. THERE SEEMED TO BE CONFUSION OF THIS SORT EVERY TIME WE HAVE OPERATED OUT OF GTR. APPEARS TO BE A COM BREAKDOWN WITH THE MIL CTLRS AND THE FAA CTLRS.