Hmmm... well the rule is:
83N . 7. WITHIN AUSTRALIA - 1 NONSTOP OR SINGLE PLANE
84N . FLIGHT PERMITTED BETWEEN THE FOLLOWING
85N . CITIES:
86N .
87N . BNE/CNS/SYD AND PER
88N . EXCEPTION - NO RESTRICTION BETWEEN SYD-PER FOR
89N . PASSENGERS ORIGINATING PER OR NEW ZEALAND WHEN
90N . IN CONJUNCTION WITH TRAVEL TO/FROM AFRICA
91N .
92N . MEL/SYD AND DRW
Is there a logical AND or a logical OR at line 91? It's not totally clear to me.