CLRNC CONFUSION REGARDING THE LYNSY RNAV 2 AND THE MIROK 1 ARR TO LAS; NV.

Narrative

CLRNC ON FLT PLAN AND ON PDC SHOWED STL -- PGS.MIROK1.LAS. AFTER ARRIVING PGS; WE WERE VECTORED AND SLOWED TO METER BEHIND TFC. WE EVENTUALLY WERE CLRED DIRECT TO LYNSY. AS WE KNEW THE MIROK 1 TO BE OUR ARR (VECTORS AFTER MIROK AND TO LAND ON RWY 25L); WE THEN FLEW THE RTE TO MIROK INTXN. ONCE AT MIROK; WE ASKED APCH WHAT HDG THEY WANTED US TO FLY. AT THIS POINT; THE CTLR ABRUPTLY QUERIED IF WE WERE ON THE ARR. WE SAID YES. HE; WE LATER FOUND OUT; MEANT THE LYNSY RNAV 2 ARR. AS PER THE MIROK 1 STAR; WE WERE AT 12000 FT AND 250 KTS AT LYNSY; AND THUS; THE SAME AT MIROK. THE CTLR THEN GAVE US SOME EASTERLY HDG AND CLRED US TO 11000 FT THEN 8000 FT. AS ALL OF THIS MISCOM WAS UNFOLDING; I WANTED TO INSURE THE ALTS AND HDG GIVEN WAS SAFE; REF THE TERRAIN. WE WERE ASSURED IT WAS. EVENTUALLY; WE UNDERSTOOD FROM THE CTLR THAT WE WERE TO HAVE BEEN ON THE LYNSY RNAV 2 ARR; PRESUMABLY AFTER LYNSY INTXN. THE FO BEGAN TO LOOK FOR THAT ARR APCH PLATE; WHILE I FLEW AND INSURED THE ALTS WERE SAFE. WE DON'T BELIEVE THAT THE CTLR ORIGINALLY GAVE US THE RNAV ARR OR IF HE DID; WE DID NOT READ IT BACK; AND HE DIDN'T CLARIFY OR QUERY US.