FLC OF WDB HAS CONFUSION ON PUSHBACK WITH CONTRADICTING INSTRUCTIONS FROM GND WHILE COMPLETING ENG START AND CHKLISTS. ON TAXI THEY TAXI INTO CRITICAL AREA AND FORCE A MISSED APCH.

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FLT FROM BOS TO MSP. COMPANY PROCS: CAPT; FO START AND MONITOR ENGS; SO OBSERVES. FO MONITORS AND TALKS TO GND CTL; CAPT MONITORS AND TALKS TO PUSHBACK CREW. AT PUSHBACK; INSTRUCTED FO TO GET CLRNC. CALLED BOS GND; CLRED TO PUSH -- PUSH STARTS. GND CALLS: 'HOLD PUSH.' FO INFORMS CAPT -- CAPT INFORMS TUG DRIVER. THEN; WITHIN 15 SECONDS; GND CALLS: 'CONTINUE PUSH.' CAPT INFORMS TUG DRIVER. DURING THIS PROCESS; FIRST ENG BEING STARTED. PUSHBACK FINISHED; TUG DRIVER INFORMS CAPT: 'SET BRAKES.' CAPT COMPLIES; INFORMS TUG: 'BRAKES SET; CLRED TO DISCONNECT.' SECOND ENG IN PROCESS OF BEING STARTED AND MONITORED BY ALL 3 CREW MEMBERS. GND CALLS: 'CONTINUE PUSH TO TXWY L.' FO INFORMS CAPT; CAPT HAS ALREADY RELEASED PUSH CREW. CAPT ASKS: 'WHY?' -- FOR FO TO ASK GND. SO SEES SECOND ENG EXCEEDING START TEMP; BUT SINCE CAPT HAS HAND ON START LEVER; ASSUMES CAPT (AND FO) MONITORING. FO ASKS GND 'WHY?' GND SAYS: 'TXWYS CLOSED -- ON NOTAMS.' BUT CLOSURES NOT ON NOTAMS -- BUT INSTEAD ON ATIS. CAPT UPSET HE DID NOT KNOW (FO WROTE DOWN ATIS) AND SO STATED. FO UPSET BECAUSE HE FELT RESPONSIBLE. CAPT ASKED FO TO GET PHONE NUMBER TO CALL. TAXI INSTRUCTIONS BEING GIVEN. FO ASKS FOR PHONE NUMBER -- GND NEVER SUPPLIES. ON TAXI; CAPT BECOMES FIXATED ON GETTING PHONE NUMBER. FO DIRECTED BY GND TO CONTACT TWR. THIRD ENG BEING STARTED. BEFORE EVEN CALLING TWR; TAXI INSTRUCTIONS GIVEN BY TWR TO CROSS APCH END OF ACTIVE RWY. CAPT HEARS CLRNC; FO DOES NOT. CAPT STILL MUTTERING ABOUT PHONE NUMBER; AND ASKS FO TO CONFIRM XING CLRNC. FO SAYS NO; NOT CLRED BUT CAN'T CHK DUE TO CHATTER ON TWR FREQ. ACFT HAS BEEN TAXIED BY CAPT INTO CRITICAL AREA AND STOPPED SINCE FO CANNOT CONFIRM XING CLRNC. CAUSES ACFT ON FINAL TO MAKE MISSED APCH. COMPANY PROCS REQUIRE TOO MUCH INTERACTION. GND CTL APPEARED TO BLAME CREW FOR PUSHING INTO CLOSED AREA -- BUT FOLLOWING INSTRUCTIONS -- CAPT TOO CONCERNED ABOUT BEING BLAMED AND VIOLATED. CAPT MADE TOO BIG AN ISSUE OF THIS. THEN ALL CREW MEMBERS STARTED FOCUSING ON ISSUE RATHER THAN JOB. WORKLOAD SO HVY THAT ONE MORE ITEM CAUSED PROCESS TO DISINTEGRATE.