Brown bacon and sausage in large pot. Caramelize onion, carrots, and celery in fat. Add ham hock. Season with salt and pepper. Deglaze pan with wine; let wine reduce by half. Add to pan chicken stock, herbs, and tomatoes. Simmer for about 1 hour. Add white beans. If needed, thicken with a little roux (flour mixed with water). Place stew in large bowl. Place duck confit on top and serve or enjoy as side dish.