Can anyone explain this?

[Pom-DownUnder]

not sure if this belongs here in Qatar or if it should be in the qantas one but either way ...

how does this make sense? same flight is offered in economy or in business depending on what the second leg is ? confused.

 

[Princess Fiona]

Looks like married segments.
QR has an Award available in J from MAN -BNE via DOH
But they do not have a J award on MAN-MEL via DOH.

 

[Pom-DownUnder]

Looks like married segments.
QR has an Award available in J from MAN -BNE via DOH
But they do not have a J award on MAN-MEL via DOH.

Thanks Fiona, I get it but I dont get it lol, seems to fall down logically lol

 

[Hvr]

seems to fall down logically lol

There's your problem, trying to use logic to understand airline pricing.