ACR CROSSES RWY WHEN CLRED TO HOLD SHORT.

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MISUNDERSTOOD TAXI CLRNC FROM PHILLY GND. THOUGHT WE WERE CLRED ALL THE WAY TO 27R. CROSSED RWY 17 ON TAXIWAY E. GND CTLR SAID NO PROBLEM GUYS BUT YOU WERE TO HOLD SHORT OF RWY 17. NO CONFLICTS. BUSY TIME OF MORNING. FULL TAXI CLRNC WAS NOT READ BACK JUST ACFT CALL SIGN. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES MAJOR PROBLEM WAS THAT CAPT DID NOT REALLY HEAR THE CLRNC. INSTRUCTIONS VERY CLR TO HOLD SHORT OF 17. WHEN APCHING RWY RPTR WAS SURE CAPT WOULD STOP AS HE WAS TAXIING SLOWLY. WHEN REALIZING NOT STOPPING FO TOLD CAPT WE NEED TO HOLD SHORT. CAPT SAID NO WE'RE CLRED TO 27R; AND CONTINUED. AT THIS TIME GND COMMENTED ON HOLD SHORT INSTRUCTIONS AND SAID 'IT'S OK; NO CONFLICT.' RPTR STATED HE WAS VERY ANGRY THAT CAPT IGNORED HIS INPUT. IN CONVERSATION AFTER THE FLT IT APPEARED CAPT REALLY NOT ALERT. THERE WAS NO HURRY TO CROSS AS THERE WAS A LONG LINE OF ACFT WAITING FOR TKOF. BOTH CAPT AND FO CLAIMED POOR SLEEP. RPTR STATES THIS IS THE WORST OF SCHEDULES FOR HIM. E COAST SHORT LAYOVER FOR MID W CREW. TRYING TO GET TO SLEEP 2 HRS EARLIER THAN NORMAL. BOTH PLTS LOOKED FOR TFC PRIOR TO XING. HAD THERE BEEN TFC RPTR WOULD HAVE STOOD ON THE BRAKES; NOT HAD A DISCUSSION.