CREATE TABLE table_55453 ("Team" TEXT, "Class" TEXT, "Day 1" TEXT, "Day 2" TEXT, "Behind" TEXT)

For the team with a class of gt2 and 3:59.820 on day 2, what was the behind?
SELECT "Behind" FROM table_55453 WHERE "Class" = 'gt2' AND "Day 2" = '3:59.820'
SELECT "Behind" FROM "table_55453" WHERE "Class" = 'gt2' AND "Day 2" = '3:59.820'