Originally Posted by
sydtogla
As a general rule of thumb, Codeshare is available on flights ex-AU that connect in Dubai, Singapore and Perth and on domestic AU/tasman legs that are part of an itinerary that meets the preceding criteria.
Yes, looks like the ex BKK codeshare has gone now that EK418/419 (DXB-BKK-SYD-CHC) has been discontinued.