And the rule:
8. STOPOVERS
Permitted
NOTE: 1. Maximum two stopovers permitted in the continent of origin of which a maximum of one
stopover is permitted in each direction in the country of origin.
2. No Stopover permitted in Hong Kong if travel is VIA HKG – FCO on QF 3860/3861.
http://www.oneworld.com/ow/air-trave...world-explorer