Brown the sausage slices, if using, without any additional fat, in batches and reserve.
Meanwhile, let the gumbo keep simmering away for another 2 hours. This is where the magic happens. At this point, start tasting for salt. Season the gumbo to taste with salt and pepper.
At this point, your gumbo is done. Add the reserved shredded chicken and reserved sausage. Stir gently, the chicken will break up if not handled lightly. Taste again for seasoning. Serve the gumbo with cooked rice and hot sauce.