A FLC TAXIED ACROSS AN ACTIVE RWY WITHOUT CLRNC AT ORD.

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AFTER BEING SWITCHED TO GND CTL AT ORD. WE RECEIVED INSTRUCTIONS TO TAXI TO RWY 14L FROM OUR RAMP POS. WE UNDERSTOOD THE INSTRUCTIONS TO BE 'W ON TXWY H; TXWY T; TXWY Z; TXWY E; TXWY Y; TXWY P; RWY 14L.' BECAUSE OF ORD'S CONGESTION WE COULD ONLY ACKNOWLEDGED WITH OUR CALL SIGN ACFT X. UPON XING RWY 4L/22R WE WERE TOLD TO STOP. IF I HAD STOPPED WHEN GND ASKED; I WOULD HAVE STOPPED RIGHT ON THE RWY. I ELECTED TO CLR RWY 4L/22R ON THE OTHER SIDE ON TXWY H. I THEN ASKED GND CTL WHAT THE PROB WAS. THEY SAID TO HOLD MY POS AND THEY'D GET BACK TO ME. AFTER A SHORT PERIOD; I WAS TOLD TO CONTINUE MY TAXI VIA THE RTE I WAS ALREADY FOLLOWING BEHIND ACFT Y DC10. I AGAIN ASKED FOR ANY CLARIFICATION AND GND TOLD ME TO MONITOR TWR FOR RWY 14L. I ASKED AGAIN; 'WAS THERE A PROB' AND 'WHAT WAS THE NATURE OF THE PROB?' I WAS TOLD THAT IF I WANTED I COULD MONITOR GND AND THEY'D GET BACK TO ME. THEY NEVER DID GET BACK TO ME. WHEN I GOT TO RWY 14L; I SWITCHED TO TWR AND WAS SUBSEQUENTLY CLRED FOR TKOF. I FLEW TO AZO. UPON MY ARR; I CALLED THE TWR SUPVR AT ORD. HE SAID THAT HE HAD CLRED US TO TAXI TO RWY 14L VIA 'W ON TXWYS H; B; J. W; T; Z; E; Y; P; RWY 14L.' I TOLD HIM THAT BECAUSE OF CONGESTION WE COULD NOT VERIFY THE CLRNC EXCEPT FOR OUR CALL SIGN. I TOLD HIM THAT WE WERE VIGILANT IN XING RWY 4L/22R AND THAT THERE WAS NO TFC ARRIVING OR DEPARTING THAT RWY AND HE AGREED. I ASKED WHY WE DIDN'T GET A CLARIFICATION AFTER XING THE RWY AND HE DIDN'T HAVE AN ANSWER. HE SAID THAT THEY PULLED THE TAPES AND THAT THIS WOULD BE CONSIDERED A 'RWY INCURSION' EVEN THOUGH THERE WASN'T AN INCURSION. HE SAID HE DIDN'T HAVE ANY LEEWAY ON NOTIFYING THE FAA REGARDS THIS MATTER. I WAS INFORMED THAT I COULD COME AND LISTEN TO THE TAPES ANY TIME. UPON MY RETURN TO ORD; I WENT TO THE TWR AND SPOKE AGAIN TO THE SUPVR TO ASK TO HEAR THE TAPES. HE TOLD ME THAT HE WAS TOO BUSY AND TO COME BACK ANOTHER TIME. LATER THAT SAME EVENING WHEN WE WERE TAXIING OUT OF ORD AGAIN. THE GND CTLR WAS GIVING TAXI INSTRUCTIONS TO A LOT OF ACFT. HE WAS NOT ALLOWING ANYONE TO EVEN READ BACK THE INSTRUCTIONS OR CALL SIGN. HE JUST KEPT GIVING INSTRUCTIONS ONE RIGHT AFTER ANOTHER.