CREATE TABLE table_909 ("No. in series" TEXT, "No. in season" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Storyboarded by" TEXT, "Original air date" TEXT, "Production code" TEXT)

How many episodes have been directed and written by Darrick Bachman and Brett Varon?
SELECT COUNT("Directed by") FROM table_909 WHERE "Written by" = 'Darrick Bachman and Brett Varon'
SELECT COUNT("Directed by") FROM "table_909" WHERE "Written by" = 'Darrick Bachman and Brett Varon'