They never met an Australian before they met Crocodile Dundee
I agree this sounds better in the past perfect than in the given, simple past, form. But, according to the SC guide on pg 46, one exception to using the past perfect is when clauses are linked by "before" or "after", since they indicate the sequence of events clearly. Could you please clarify this exception - ie, when should we not use the past perfect to highlight an earlier action when the independent clause uses a verb in the past tense?
Thanks -