SELECT "wrestler" FROM table_202_45 WHERE "wrestler" IN ('gene kiniski', 'ric flair') ORDER BY "combined days" DESC LIMIT 1
who has spent more time as nwa world heavyyweight champion , gene kiniski or ric flair ?
CREATE TABLE table_202_45 (
    id number,
    "rank" number,
    "wrestler" text,
    "no. of reigns" number,
    "combined days" number
)