Originally Posted by
anabolism
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Can I route via DOH for Asia to Australia if I also wanted to visit Europe later? I'm thinking not, due to rule (4)(e) "Only one intercontinental departure and one intercontinental arrival permitted in each continent".
So, an itinerary such as
nrt-kul-cmb (stop) cmb-doh-adl (stop) adl-per (stop) per-syd (stop) syd-dfw-san (stop) san-dfw-mia (stop) mia-lax-lhr (stop) lhr-doh-jnb (stop) jnb-hkg (stop) hkg-nrt
would be invalid
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Your itinerary would be invalid, but not for the reason you stated.
(a second visit to Europe/Middle East is allowed, but only in conjunction with travel to/from Africa)
The reason your itinerary is invalid is because it violates this rule
4(b) Travel must be in a continuous forward direction between TC1 - TC2 - TC3.
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TC2 is Europe/Middle East plus Africa
TC is Asia plus South West Pacific
and your itineray would be TC3(CMB)-->TC2(DOH)-->TC3(ADL)