TFC CONFLICT OCCURRED BTWN HEAD-ON TFC IN ZAU AIRSPACE.

Narrative

ZOB CALLED ON THE LANDLINE TO MAKE A POINTOUT ON AN ACFT TRAVELING ON A COURSE FROM NW OF LITCHFIELD; MI; TO THE BRAVE INTXN OUTSIDE OF MILWAUKEE; WI. AT THE SAME TIME; ANOTHER ACFT WAS CLBING OFF OF O'HARE DIRECT TO SALEM; MI. AT THE TIME THE POINTOUT WAS RECEIVED; ACFT X WAS APPROX 50 MI FROM THE OTHER ACFT LEAVING THE MIDDLE TWENTIES ALTS. IMMEDIATELY AFTER THE POINTOUT WAS RECEIVED; I MADE THE RADAR CTLR AWARE OF THE ACFT. ABOUT 2 MINS LATER THE SAME SECTOR IN CLEVELAND CALLED TO HAVE US TURN AN ACFT IN FRONT OF ACFT Y TO THE SE BECAUSE ACFT Y WAS GOING TO DEVIATE ON A 270 DEG HDG. THIS WOULD HAVE STILL KEPT THE ACFT SLIGHTLY N OF OUR BOUNDARY. AROUND THIS TIME THE RADAR CTLR EXPEDITED ACFT X THROUGH FL330 FOR FL370. IN THE RELIEF BRIEFING NO MENTION WAS MADE ABOUT THE POINTOUT OR THAT HE WAS DEVIATING. ONLY THE RADAR CTLR KNEW ABOUT THE POINTOUT; NOT THAT HE WAS DEVIATING. 30 SECONDS LATER; I RETURNED TO THE SECTOR TO LET THE RADAR CTLR AND THE RADAR ASSOCIATE KNOW THAT ACFT Y MAY DEVIATE S. NEITHER ONE HEARD WHAT WAS SAID AND AN ERROR OCCURRED A FEW MINS LATER.