Griesel AJA made several non-binding observations: (1) He expressed doubt (without deciding) whether the question stated by the arbitrator met the jurisdictional threshold of being a 'question of law', noting it required examination of the facts in Zysset rather than examination of underlying legal principles, and noting that questions about deductibility of collateral benefits cannot be answered by a single juridical test but depend on policy considerations of fairness which are normative in nature. (2) He suggested (without deciding) that the matter may have become moot given that the final award had been made in September 2006, payment in full had been made by the RAF in October 2006 without reservation of rights, the RAF did not hold back any amount, and the RAF failed to exercise its right to appeal against the award - the payment might be analogous to payment after an appealable judgment which, absent reservation of rights, amounts to peremption. (3) He noted that guidance on factors to consider before exercising powers under s 20(1) can be found in s 45 of the English Arbitration Act 1996, which requires that the determination of the question would likely produce substantial savings in costs and that the application be made without delay. (4) He observed it would be contrary to principle for courts to give opinions on assumptions or academic/hypothetical questions under s 20(1), and it would normally be premature to state questions until primary facts have been determined. (5) He invoked the public policy principle of finality in litigation (interest rei publicae ut sit finis litium) noting that in this case the collision occurred thirteen years before and no finality had been reached, and following the High Court's procedure would prolong the process and delay finalization indefinitely. Harms DP observed that Scott J in Zysset did not purport to lay down a generally applicable rule in isolation from the facts, but based his conclusion on the specific facts of that case.