LTSS BTWN A WDB ON SID FROM NRT AND A COMPANY WDB ON DSCNT VECTOR INTO NRT.

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ON DEP RWY 16 FROM NRT (PAPAS 1) AT APPROX 13 MI; CLBING THROUGH 7600 FT IN TURN TO INTERCEPT 140 DEG RADIAL. WE WERE GIVEN A RADAR TURN TO 090 DEG; NOTICED CONVERGING TFC 1 O'CLOCK. NRT DEP CALLED AND SAID 'START TURN NOW!' TFC AT 7600 FT; 3 MI; 3 O'CLOCK. WE HAD ALREADY COMMENCED TURN AND WERE ABOUT THROUGH 110 DEG WHEN CALL CAME. AT FIRST; I THOUGHT I WAS LOOKING AT TAIL LIGHTS OF A WDB THAT DEPARTED AHEAD OF ME. I BELIEVE THE INBOUND ACFT WAS ON THE TRACK OF A COSMO N ARR; BUT USUALLY WE ARE AT 10000 FT AT THAT SPOT. I ASKED CTLR TO IDENT TFC. HE REPLIED 'NO PROBLEM'. WE TALKED TO INBOUND ACFT ON COMPANY FREQ. HE SAID HE COULD SEE US; DIDN'T THINK IT WAS A PROBLEM. THE CLOSURE RATE (400 PLUS) WOULD HAVE BEEN A PROBLEM WITH BOTH AT SAME ALT. COPLT FLYING SAW INBOUND PASS BY; DIDN'T SEEM TO BE A PROBLEM FOR HIM EITHER. SO FIRST TO SEE TFC. I GUESS THIS IS NO PROBLEM; BUT IT DIDN'T LOOK LIKE MUCH MORE THAN 2 MI WHEN HE PASSED BY. ITS THE FIRST CLOSE ONE IN TYO AREA FOR ME IN LONG TIME. SUPPLEMENTAL INFO FROM ACN 185300. WE WERE GIVEN A HDG OF 360 DEG RADAR VECTORS AND A DSCNT FROM 13000 FT TO 6000 FT. THE CAPT READ BACK 360 DEG LEAVING 13000 FT FOR 6000. AT 7300 FT THE CTLR GAVE US A HDG OF 310 DEG AND ASKED US OUR ALT. WE RESPONDED LEAVING 7000 FT FOR 6000 FT. THE CTLR THEN STATED OUR LAST ASSIGNED ALT WAS 10000 FT. THE CAPT RESPONDED 'NO SIR WE WERE CLRED TO 6000 FT AND I READ BACK 6000 FT.' THE CTLR REITERATED A TURN TO 310 DEG TO AVOID TFC.