BA41 PIC IS DISTRACTED BY RESPONDING TO ATC REQUEST FOR WX RPT AND BRAKING ACTION.

Narrative

DURING APCH IN IMC INTO BMI; THE WX WAS DOWN TO MINIMUMS; WITH SNOW ON THE RWY. THE APCH CTLR SWITCHED US OVER TO THE TWR AND CLRED US FOR THE APCH. WHEN I SWITCHED OVER TO THE TWR; THE CTLR ASKED US TO RPT OVER THE MARKER. DURING THE APCH; WE WERE CONTACTED BY THE TWR AT LEAST 2 MORE TIMES -- ONCE TO GIVE HIM A PIREP ON THE CEILING; AND THE OTHER TIME WAS FOR A BRAKING ACTION RPT FOR THE RWY. DURING THE APCH; THE FO AND I WERE BUSY WITH THE APCH WE WERE DOING. SO; THE COMS BTWN THE TWR AND US DEALING WITH CEILING AND BRAKING RPT WERE UNNECESSARY. BOTH RPT REQUESTS WERE MADE BY THE TWR OCCURRING ONE BEFORE AND THE OTHER AFTER THE OM. I DID MAKE THE RPT OVER THE OM AND WAS CLRED TO LAND. BUT AFTER LNDG; THE TWR WAS SURPRISED THAT WE WERE ALREADY ON THE GND WHEN WE CONTACTED HIM WITH HIS RPT FOR BRAKING AND CEILINGS. HIS WORDS WERE 'OH; YOU GUYS ARE ALREADY ON THE GND?' WITH THIS; THE FO AND I WERE NOT EVEN SURE THAT HE GAVE US OUR CLRNC TO LAND. IT TOOK US ABOUT 2-3 MINS OF TAXI TIME TO TRY TO REMEMBER IF HE DID OR DID NOT. (TWR JUST GAVE US CLRNC TO TAXI TO THE GATE.) BUT; AFTER A WHILE; WE DID RECALL THAT WE WERE CLRED TO LAND. A MAJOR FACTOR IN THE PROB WE HAD WAS WITH THE UNNECESSARY COM BTWN US AND THE TWR FOR THE RPT. THIS LED TO A DISTR TO THE CREW IN OUR DUTIES. THE TWR COULD JUST ASK US FOR THE RPT ONCE WE REACHED THE GND; ESPECIALLY WHEN A CREW IS SHOOTING AN APCH IN IMC IN MINIMUM WX.