A320 simulator IREX flight test.
CAO 40.2.1
10.4.2 the instrument rating test must be conducted:
a) by casa, an approved testing officer or an approved person; and
b) in an aircraft, or approved synthetic flight trainer that is appropriate to the grade of instrument rating sought.
So question is, is the 320 flight sim an approved synthetic flight trainer? No mention of a requirement to be affiliated with an airline.