Machinbird
Your post touches the issue of CRM as well as training very nicely. A proper division of responsibilities and teamwork come into play. These don't seem to have been present in this cockpit at all. The PF acted in a way that suggests he had no idea of what was happening and the PNF failed to take any action to correct this situation or to redefine the approach to the problem beyond saying "go down". At first the situation wasn't one where an intensive response was needed - sitting there, following the procedures would probably have solved it with AS returning after maybe a couple of minutes. Several threads back PJ2 suggested this very approach.