U better read some explanations to get to knw about PQWL.
RLWL & PQWL are nearby same, only used by different zones in IR.
In PQWL small nearby stations are pooled up with big station having more quota (DD, Ahmednagar, Kopergaon MMR with Pune), while in RLWL, small in between station are provided their own quota (BSB, SLN, JAUNPUR, MUSAFIRKHANA, NIHALGAH, LKO having differet Quota for Shramjeevi Express)
But...
more... yes, both are applicable only when are mixed from Intermediate pool to destination pool, like BSL-NDLS, not BSL-Jhansi, if the train is NZM-NDLS EXP.
Waiting Ticket in two intermediate pool or remote are granted Request Assessment.
Just yesterday, one PNR Analysis showed me, Godan Waiting - LTT-ALD under PQWL. Now, ALD isnt end station, but Pooled along with GKP or Chappra.