2 SAME COMPANY ACRS HAVE LTSS. VECTORED ALL OVER THE PLACE.

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ON CLBOUT FROM BWI; HANDED OFF TO CENTER AND CLRED TO FL230. WE WERE PUT ON A HDG OF 190 DEG FOR SEVERAL MONTHS. WE HADN'T HEARD FROM ATC ON THIS FREQ (121.05) FOR A FEW MINS; SO I CONFIRMED OUR CLRED ALT (FL230). WE THEN SAW AN MLG (WHICH TURNED OUT TO BELONG TO OUR COMPANY) CONVERGING FROM OUR L AT APPROX OUR ALT (WE WERE JUST UNDER FL230 AND LEVELING OFF). OTHER ACFT WAS STILL SEVERAL (APPROX 5-7) MI AWAY. CTLR GAVE HIM A HARD L TURN AND US A HARD R TURN JUST AS WE WERE TAKING ACTION OURSELVES. (CTLR APPARENTLY SAW THE SITUATION DEVELOPING AT ABOUT THE SAME TIME WE DID.) CTLR ALSO TOLD US TO DSND TO FL210. HE WAS QUITE 'EXCITED' DURING THIS EXCHANGE. BOTH AIRPLANES GOT SEVERAL OTHER TURNS (PRESUMABLY TO AVOID OTHER TFC IN THE AREA) AND THEN HANDED OFF. AT NO TIME WAS ANY LACK OF SEPARATION NOTED BY ATC TO EITHER FLC INVOLVED; NOR WAS ANY TFC POINTED OUT. VERT SEPARATION WAS NEAR 0; AND HORIZ WAS CERTAINLY LESS THAN 5 MI AT SOME POINT. THE CTLR ALMOST CERTAINLY FORGOT ABOUT (OR POSSIBLY NEVER KNEW ABOUT DUE TO SOME SHIFT CHANGE) ONE ACFT. THE EXCESS OF HDG CHANGES GIVEN TO EACH ACFT LED ME TO BELIEVE THAT HE MAY HAVE ALSO GOTTEN LED ME TO BELIEVE THAT HE MAY HAVE ALSO GOTTEN US MIXED UP AFTER THE INITIAL EVASIVE TURNS WERE GIVEN. IT IS PARTICULARLY IRRITATING TO THIS WRITER THAT FAA PERSONNEL CAN 'SCREW UP' THIS BADLY AND EITHER HAVE THE ENTIRE SITUATION COVERED UP (AS THIS ONE ALMOST CERTAINLY WAS) OR ELSE HAVE ALL SANCTIONS HANDLED INTERNALLY -- WITH A COMPARATIVE SLAP ON THE WRIST! ACFT PERSONNEL GET GOVT FINES; TIME OFF (OR DISMISSAL); AND NEWS MEDIA-GENERATED CHARACTER ASSASSINATION FOR SIMILAR MISTAKES.