SINGLE PLT IN THE CONFUSION OF A NEAR MISS ON FINAL MAY HAVE LANDED WITHOUT CLRNC.

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AFTER A VFR DEP FROM I6X I CLBED TO 2500 FT AND CONTACTED RDU APCH FOR FLT FOLLOWING AND A REQUEST FOR A PRACTICE ILS APCH AT RDU WITH A FULL STOP LNDG PLANNED. APCH ASSIGNED A XPONDER CODE AND INFORMED ME TO EXPECT VECTORS FOR AN ILS TO RWY 5L AT RDU. NORMAL VECTORING FOR THE APCH CONTINUED IMMEDIATELY WITH A FEW CALLS FOR TFC PRIOR TO BEING CLRED FOR THE APCH. AFTER BEING CLRED FOR THE APCH TO RWY 5L A TFC CALL WAS MADE AT MY 10 O'CLOCK POS. I DID NOT SEE THE TFC AND INFORMED THE CTLR. NOW INBOUND TO MARKER THE CTLR ASKED FOR AN IMMEDIATE DSCNT TO 2000 FT. THE TFC WAS RPTED TO BE AT 2500 FT. I IMMEDIATELY STARTED THE DSCNT; TAKING ME WELL BELOW THE GS. I THEN SAW THE ACFT AT 11 O'CLOCK POS; AND INFORMED APCH. APCH THEN CLRED ME TO RESUME THE APCH AND CONTACT TWR. SIMULTANEOUS WITH THIS ACTIVITY; THE PAX WHO WERE BOTH ON THE ACFT'S INTERCOM SYS BECAME CONCERNED ABOUT THE PROX OF THE OTHER ACFT AND BEGAN ASKING NUMEROUS QUESTIONS. LNDG CHKS WERE PERFORMED AND AN UNEVENTFUL LNDG WAS MADE ON RWY 5L AT RDU. IN ALL OF THE CONFUSION THAT OCCURRED DURING THE HDOF WITH TFC AND THE CONVERSATIONS OCCURRING OVER THE ACFT'S INTERCOM; I CANNOT CONFIRM THAT I RECEIVED AND ACKNOWLEDGED LNDG CLRNC. NO QUESTIONS OR COMMENTS WERE RECEIVED FROM TWR OR GND AFTER LNDG.