It follows therefore that for inherent jurisdiction to be engaged, the decision sought to be set aside for breach of natural justice must be a decision which the Appellate Division had jurisdiction to hear and determine in the first place. In that situation, the Appellate Division would not be functus officio as its jurisdiction would not have been exhausted (Lee Tat at [55]), paving the way for the exercise of its inherent jurisdiction, or more accurately, its inherent power to rehear the matter. Therefore, for the Appellate Division’s inherent jurisdiction to be engaged, the breach of natural justice must be in relation to a decision it made in the exercise of its jurisdiction, ie, it was a breach of natural justice in relation to one of its own decisions. With this in mind, we turn to consider the Appellate Division’s jurisdiction to hear OA 3.