CREATE TABLE table_34321 ("Date" TEXT, "Episode" FLOAT, "Performer 1" TEXT, "Performer 2" TEXT, "Performer 3" TEXT, "Performer 4" TEXT)

What is the sum of the episode numbers where chip esten is the 4th performer and christopher smith was the 2nd performer?
SELECT SUM("Episode") FROM table_34321 WHERE "Performer 4" = 'chip esten' AND "Performer 2" = 'christopher smith'
SELECT SUM("Episode") FROM "table_34321" WHERE "Performer 2" = 'christopher smith' AND "Performer 4" = 'chip esten'