Please try and understand the question
Again it appears that those who have replied to this thread cannot decipher what the actual question is, therefore I shall repeat it as follows
"Anyone know why the flight was not shown on the Sydney Airport on-line arrivals board at all?"
It pertains to the Sydney Airport on-line arrivals and not Qantas flight 64.
If you both are still having difficulty then I will draw it for you. I don't know what building you both hail from, ie, QCA, B, or C, but I can always meet you in Coward St and explain further.