Agree. A 40 sth line is not an excuse for you not to agree IN ADVANCE with CX i.e. before departure of the flight...

Reason: After the departure you are no-show... It would be difficult for CX to refund you as it would be very difficult for them to differentiate real mis-connected passenger like you or those no-show simply trying to take CX advantage by roaring...

Now I guess the best OP might get is to have CX waive the no-show and rebooking fee... But this would still need substantial argument and giving them quite a lot of supporting documents...