This year, with Shabbat falling out on the Eve of Pesach, we sell and burn our Chametz a day early, on Friday. We hold a little Chametz over to eat on Shabbat.
We eat the bit of Chametz we held over from the burning, as part of our Shabbat meals by 10:47am. We get rid of the remainder and then make a declaration of nullification by 12:08pm.