Hi- I'm flying SYD-LAX-LHR on an AA booking (economy)- with QF metal for the SYD-LAX component, with an 18 day stopover in LA

I two questions which I hope someone can please answer for me.
1. What is my free luggage allowance (checked) for the SYD-LAX QF flight? Will it be QF rules or AA? I understand that the for LAX-LHR flight I will have to pay $60 for my 2nd checked bag (I have been living in Oz for a year and am returning to the UK so want to take more than just 1 bag!)- that's fine but I don't want to get to the airport and have QF start charging me per kg.
From the general Qantas website QF eco to the USA is 2 x 23kg, but there is no where on my booking that specifies what my allowance is. Does anyone have experience of this?
2. I am a BA exec blue member & my SYD-LAX (QF) flight is coming up under my membership, but the AA leg isn't- is this normal? I thought being 'OneWorld' both should come up- but maybe I am assuming too much!
Many thanks to anyone who can help!