DC9-30 CREW WITH TKOF CLRNC; AND ANOTHER ACR ACFT ON FINAL APCH. TWR CTLR GAVE ACFT ON FINAL A GAR. THE CTLR DID NOT ACCOUNT THE COMPANY REQUIREMENT TO ACCOMPLISH A STATIC TKOF.

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WE WERE CLRED TO TAXI INTO POS AND HOLD RWY 22L AT MDW. AS WE TAXIED ONTO THE RWY; THE MDW TWR CTLR URGENTLY CLRED US FOR IMMEDIATE TKOF; TURN TO A HEADING; TFC ON FINAL RWY 22L. ACR REQUIRES ALL MDW DEPS TO MAKE A MODIFIED STATIC TKOF. I HAD TO MAKE A SPLIT SECOND DECISION TO EITHER TAXI OFF THE RWY OR MAKE THE MODIFIED STATIC TKOF. I CHOSE TO DO THE STATIC TKOF. I XFERRED ACFT CTL TO THE FO BECAUSE IT WAS HIS LEG. AFTER RELEASING BRAKES AND ON THE TKOF ROLL; THE TWR CTLR SAID WE WERE TAKING 'ENTIRELY TOO MUCH TIME ON THE RWY' AND DIRECTED THE APCHING ACFT TO GO AROUND. THE FO CONTINUED THE TKOF NORMALLY. AFTER GETTING THE GEAR UP; BOTH THE FO AND I WERE TRYING TO RECALL THE HEADING INSTRUCTIONS WHILE I WAS TRYING TO GET A PICTURE OF WHERE THE GAR ACFT WAS TO ENSURE WE AVOIDED HIM. MEANWHILE; I WAS ATTEMPTING TO REQUEST OUR HEADING FROM THE CTLR; BUT THE FREQ WAS CONGESTED DUE TO THE CTLR AND GAR PLT COORDINATING INSTRUCTIONS. BY THIS TIME; THE FO HAD MADE A SHALLOW L TURN TO APPROX 205 DEGS. AT ABOUT 1700 FT MSL; THE CTLR SAID THAT THIS WAS THE 'SECOND TIME A COMPANY ACFT HAD DONE THIS TODAY;' TURN R HEADING 110 DEGS. I DON'T KNOW IF THIS WAS THE SECOND TIME A COMPANY ACFT DIDN'T MAKE AN IMMEDIATE TKOF OR THE SECOND TIME COMPANY ACFT DIDN'T TURN TO THE DEP HEADING IMMEDIATELY AFTER TKOF. IN ANY CASE; OUR TURN TO 110 DEGS WAS MADE WELL WITHIN 4 NM OF MDW AS THE PROC DICTATES. WE FLEW AS DIRECTED; LEVELING OFF AT 3000 FT AS CLRED. THE REST OF THE DEP WAS UNEVENTFUL. COMMENTS: THE MDW PROC IS NON STANDARD TO START WITH. GETTING A CLRNC FOR AN IMMEDIATE TKOF; GIVEN A 250 DEG HDG CHANGE; TRYING TO AVOID THE GAR ACFT AND BEING UNABLE TO QUESTION THE CTLR -- ALL OF WHICH WAS UNEXPECTED -- CONTRIBUTED TO THIS EVENT. FURTHER; DOES MDW KNOW COMPANY ACFT MUST DO A MODIFIED STATIC TKOF DELAYING US SOMEWHAT ON THE RWY? SUPPLEMENTAL INFO FROM ACN 597307: IT HAS ALWAYS BEEN OUR COMPANY POLICY TO BRING ACFT TO COMPLETE STOP AND RUN ENG UP TO CERTAIN EPR PRIOR TO RELEASING BRAKES AND THIS SHOULD HAVE BEEN ANTICIPATED WHICH WOULD NOT HAVE CAUSED THE GAR. THERE WAS CONFUSION ON OUR BEHALF AS TO EXACTLY WHAT THE HEADING WAS AFTER TKOF. WE DID NOT ANTICIPATE AN IMMEDIATE TKOF WHEN CLRED ONTO RWY 22L TO HOLD AND WHEN WE WERE TOLD TO TAKE OFF DUE TO TFC; IT CAUSED UNEXPECTED HURRYING IN THE COCKPIT AND WE SHOULD HAVE HAD THE CLBOUT INSTRUCTIONS UNDERSTOOD BY BOTH CREW MEMBERS.