A B737-300 CREW LANDED WITHOUT CLRNC ON RWY 19R AT MCI.

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FLYING FROM STL TO MCI; THE WX WAS AT MINIMUMS AND WE WERE VERY CLOSE TO OUR MAX LNDG WT. THE WX AT MCI WAS CONSTANTLY CHANGING AND WE WERE ASSURING WE WERE WITHIN LNDG XWIND AS WELL AS UNDER OUR MAX LNDG WT. INITIALLY; WE PLANNED THAT I WOULD FLY THE APCH AND THE CAPT WAS REQUIRED TO LAND PER OUR COMPANY PROCS. THE WX IMPROVED TO 3/4 MI SO THE CAPT WASN'T REQUIRED TO LAND. WE HAD BRIEFED THE ILS RWY 19R WITH THE CAPT LNDG; AND ALTHOUGH IT WASN'T REQUIRED; WE STILL BELIEVED IT TO BE THE BEST COURSE OF ACTION. AS I FLEW THE APCH (ON AUTOPLT) IT WAS VERY TURBULENT DUE TO WINDY CONDITIONS. WE WERE GIVEN A SPD REDUCTION JOINING THE LOC; AND OBSERVED VIA THE TCASII WE WERE STILL GAINING ON OUR TFC; SO WE CONFIGURED AND SLOWED TO APCH SPD. ONCE AT APCH SPD; SEPARATION WAS GOOD; AND AN UNEVENTFUL LNDG WAS MADE. CLRING THE RWY; I WENT TO SWITCH TO GND CTL; AND NOTICED WE WERE STILL ON APCH CTL FREQ. AFTER SECURING THE ACFT AT THE GATE; THE CAPT CALLED THE TWR AND DISCUSSED THE SIT. THE TWR STATED THEIR WORKLOAD WAS HIGH TOO; AND IT WAS NOT TO BE WORRIED ABOUT.