Question: how long to cook 2 briskets in the oven?
Answer: Preheat oven to 300° and place a rack inside the large roasting pan. ... 
Place the brisket, fat cap up, in the middle of aluminum foil prepared in the roasting pan. ... 
UPDATE: Place in the oven and bake for about 1 hour and 15 minutes per pound, until the brisket reaches about 180°.