Court hierarchy in Australia is:
1. High Court of Australia
2. Federal Court of Australia
3. State Supreme Courts
4. Magistrates / Local Courts
This means there are two courts of appeal above the Victorian Supreme Court where this order was made. This is not about prejudicing the jury as these sorts of cases are usually decided by a judge with no jury in Australia.
The hierarchy has branches; the Federal Court isn't above the State Supreme Courts in any meaningful sense. Appeals from a State Supreme Court go to a State Court of Appeal and don't touch the federal system unless they are ultimately appealed to the High Court.
It's been a long time since I studied, but as I recall it the Federal Court is not superior to Supreme Courts. They are the lower courts for Federal laws. Appeals from either to the High Court is where the commonality comes in.
We also have District Courts, which are superior to Magistrates / Local Courts and and a whole bunch of different kinds judicial and administrative tribunals.
This means there are two courts of appeal above the Victorian Supreme Court where this order was made. This is not about prejudicing the jury as these sorts of cases are usually decided by a judge with no jury in Australia.