Parallel and QBname

Running dbms_xplan.display_cursor with advanced options on a sql running with parallel slaves I can see as you know “Outline Data” and QBnames..

1-I know the sql is running in parallel.
2-I see “PQ_DISTRIBUTE_WINDOW”, “PQ_DISTRIBUTE” in outline data.
3-no related parallel variables in “OPT_PARAM”.
4-hint report part shows

Hint Report (identified by operation id / Query Block Name / Object Alias): Total hints for statement: 6 (U - Unused (5))

   0 - STATEMENT

         U -  PARALLEL(8) / duplicate hint
         U -  PARALLEL(8) / duplicate hint
         U -  PARALLEL(8) / duplicate hint
         U -  PARALLEL(8) / hint overridden by another in parent query block
         U -  PARALLEL(8) / hint overridden by another in parent query block
           -  PARALLEL(8)



1-Why I can not see a “Query Block” with the parralele hint and its degree?