Originally Posted by Hoc
So, then, when someone suggested a routing from SYD-LHR, a couple of stops in Europe, and then later had a series of North America stops, they were proposing an invalid routing, right?
No, not necessarily. It would if they get from Europe to Australia via North America but not via Asia. I dont know the thread but just considering wht you said you could do Australia-London via Bangkok, European stops, London to North America, North American stops, then North America back to Australia. It goes in one direction (westbound).