CREATE TABLE table_204_832 (id DECIMAL, "name" TEXT, "nationality" TEXT, "club" TEXT, "from" DECIMAL, "until" TEXT)

who coached the silverbacks longer , abundis or chacon ?
SELECT "name" FROM table_204_832 WHERE "name" IN ('jose manuel abundis', 'alex pineda chacon') AND "club" = 'atlanta silverbacks' ORDER BY "until" - "from" DESC LIMIT 1
SELECT "name" FROM "table_204_832" WHERE "club" = 'atlanta silverbacks' AND "name" IN ('jose manuel abundis', 'alex pineda chacon') ORDER BY "until" - "from" DESC NULLS LAST LIMIT 1