CREATE TABLE table_204_123 (id DECIMAL, "week" DECIMAL, "date" TEXT, "kickoff" TEXT, "opponent" TEXT, "results\ final score" TEXT, "results\ team record" TEXT, "game site" TEXT, "attendance" DECIMAL)

which week has the same kickoff time as week 6 ?
SELECT "week" FROM table_204_123 WHERE "week" <> 6 AND "kickoff" = (SELECT "kickoff" FROM table_204_123 WHERE "week" = 6)
SELECT "week" FROM "table_204_123" WHERE "kickoff" = (SELECT "kickoff" FROM "table_204_123" WHERE "week" = 6) AND "week" <> 6