We will be flying on an Air Canada flight from Vancouver to Sydney, and then connecting within a few hours on a QF flight to Brisbane.

What are the steps?

I presume we will be screened by an immigration officer in SYD (we have the electronic visa).

Will we pick up the luggage at Sydney, and then go through customs (we have to physically pick up the luggage at the first Canadian or US airline port of entry, even though we subsequently take another domestic Canadian or US flight; in Mexico on in the Schengen zone of Europe, the luggage is picked up at the final destination, if there is a flight within the last geographic region)?

I presume that we will take the luggage to the Qantas check-in counter (for domestic flights) - will that be a separate terminal building, or the same terminal building (or will be there be a connection convey belt just outside of customs, as is the case in many Canadian airports)?