TWR CHIEF ACCUSED DC9 FLC OF LNDG WITHOUT CLRNC. FLC IS UNSURE WHETHER THEY HAD LNDG CLRNC.

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YEG APCH CTL HANDED US OFF TO YEG TWR. WE WERE ON AN ILS RWY 30 APCH AT YEG. I SWITCHED TO TWR AND COMPLETED OUR LNDG CHKLIST. LNDG WAS UNEVENTFUL AND WE TAXIED CLR OF RWY AND CONTACTED GND WHO CLRED US TO GATE. LATER AT THE HOTEL; I RECEIVED A PHONE CALL FROM WHO I BELIEVE WAS THE YEG TWR CHIEF WHO INFORMED ME THAT WE HAD LANDED WITHOUT LNDG CLRNC. HE ALSO MENTIONED THAT THERE HAD BEEN A SVC VEHICLE IN THE VICINITY OF THE RWY. HE SAID IT HAD BEEN BTWN 50 FT AND 200 FT OFF THE RWY AND THAT THEY HAD TRIED TO INFORM US OF THIS. HE ALSO ASKED IF I WOULD HAVE ACCEPTED LNDG CLRNC WITH THE KNOWLEDGE THAT THE VEHICLE WAS IN THE AREA. MY RESPONSE WAS THAT THE RWY WAS CLR AND THAT A VEHICLE 50 FT OFF THE RWY WOULD NOT HAVE IMPEDED OUR LNDG. I CANNOT SPECIFICALLY RECALL ASKING FOR OR RECEIVING LNDG CLRNC; HOWEVER; THAT IS THE NORMAL OPERATIONAL PROC AND I MUST HAVE FELT THAT WE HAD RECEIVED CLRNC. WORKLOAD IN A 2 PERSON COCKPIT; PARTICULARLY DURING ACTUAL CONDITIONS; WAS A CONTRIBUTING FACTOR IN THIS INCIDENT.