RPTR FO IS WORRIED THAT THE FLT CONTINUED UNDER IFR BEYOND THE CLRNC LIMIT WITHOUT A CLRNC.

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ON CIVET 1 ARR INTO LAX; WE WERE VECTORED TO EXPEDITE ARR AND ASKED TO MAINTAIN 320 KTS. WE ASSUMED WE WERE #1 IN SEQUENCE REF OTHER ARRIVING ACFT FOR LAX. CLRNC WAS TO INTERCEPT THE RWY 25L LOC 'CLRED CIVET 1 LOWER ALTS.' SHORTLY AFTER INTERCEPTING THE RWY 25L LOC AT BREMR INTXN; WE WERE 320 KTS; ASSIGNED 250 KTS; THEN 180 KTS; THEN 210 KTS; ALL WITHIN A 4 MIN TIME SPAN. TO SAY WE WERE A LITTLE BUSY WOULD BE AN UNDERSTATEMENT; BUT WE COMPLIED WITH ALL OF THE STEP-DOWN ALTS ON THE CIVET 1 ARR. AT INTXN 'ARNES' ON THE CIVET 1 IT SAYS TO 'EXPECT APCH CLRNC' FOR THE ILS RWY 25L AT LAX. WITH ALL OF THE FREQ CHANGES INBOUND AND THE CONGESTION ON SOCAL APCH FREQ; WE THOUGHT WE HAD APCH CLRNC FOR THE ILS RWY 25L SINCE WE BASICALLY WERE COMPLYING WITH 'LOST COM' PROCS DUE TO SOCAL'S FREQ SATURATION. ALSO; SINCE THEY HAD US GOING AS FAST AS POSSIBLE INBOUND (320 KTS WITH EXPEDITE VECTORS); IT SEEMS UNLIKELY THAT WE WOULD BE HOLDING AT ARNES (OUR SUPPOSED CLRNC LIMIT) SINCE WE WERE CLRED TO INTERCEPT THE LOC RWY 25L LAX. THIS GETS PRETTY CONFUSING BUT WHEN YOU GET TO ARNES WHERE WILL YOU GO AND AT WHAT ALT? SINCE WE WERE ESSENTIALLY 'LOST COM' WE ELECTED TO DSND BELOW 10000 FT AND CONTINUE THE ILS RWY 25L AT LAX. RECOMMENDATION: THE CIVET 1 ARR AT LAX SHOULD HAVE A PUBLISHED HOLDING PATTERN AT 'ARNES' INTXN; AND A NOTE THAT CLRLY SAYS 'IF APCH CLRNC NOT RECEIVED BY ARNES -- ENTER HOLDING DO NOT DSND ON THE RWY 25L LOC.