CREATE TABLE table_23060 ("Team" TEXT, "Division Titles" FLOAT, "Playoff Berths" FLOAT, "AFL Titles" FLOAT, "AFC Championships" FLOAT, "Super Bowl Championships" FLOAT)

If the playoff berth is 17, what is the AFC championship number?
SELECT "AFC Championships" FROM table_23060 WHERE "Playoff Berths" = '17'
SELECT "AFC Championships" FROM "table_23060" WHERE "Playoff Berths" = '17'