While not a traditional recipe, the best brisket I ever made spent around 70 hours in the Grainfather at 55C (sous-vide with sea salt, garlic powder, fresh marjoram and rosemary twigs), then about 2 hours in the smoker with banksia cones at around 60C. Rested for about 15 minutes while I got the smoker up to 200C, then caramelised on the outside, which only takes about 1 or 2 minutes on each side. Wrapped in alfoil, put in a plastic container and rested for another hour before serving.
The beauty of this method is that you are completely in control of the timing when it comes to serving the meal. A big enough chunk can easily be rested for several hours.