I have an itenerary SYD-BNE-HKG with a 2.5 hour connection at BNE. SYD-BNE is with QF and BNE-HKG is with CX. I want to confirm that the following
1) 2.5 hours should be enough to transfer from domestic to international terminal
2) our bags can be through checked at Sydney domestic airport to HK.
3) if our bags can be through checked, do we just exit the building and hop on the bus to international intemrinal knowing that the luggages will be transferred to CX plane without any issue? Any way to check with CX whether the luggages have arrived at the aircraft?
4) the economy baggage allowance is per CX policy. I am OneWorld Emerald so when i travel CX i can bring 3 check in bags (55 kg in total) and 7kg hand carry.

I tried to call the CX hotline but have been put on hold for 30 minutes. Thought it would be easier to get my answers here in the forum.

Thanks for your help.