““Where, at the appeal stage, there is evidence that a requesting judicial authority wishes to interview a requested person in the requested state, which, had that evidence been before the magistrates court, the mandatory provisions of s. 21B EA 2003 would have required the court to adjourn and give effect to the request, to what extent should the appellate court either defer to that scheme or give effect to it? In such circumstances, is the appellate court obliged to consider the question of the possibility of less coercive measures, pursuant to s. 21A EA 2003?”