CREATE TABLE table_205 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Kickoff [a ]" TEXT, "Venue" TEXT, "TV" TEXT, "Attendance" FLOAT, "Record" TEXT)

How many teams did they play week 6
SELECT COUNT("Opponent") FROM table_205 WHERE "Week" = '6'
SELECT COUNT("Opponent") FROM "table_205" WHERE "Week" = '6'