Despite it's indicated on their web site "no checked bags on separate ticket", the agent at USM checked my bags on the separate CX ticket , he only asked me for the CX flight number (he told me no PNR needed) and few minutes after I got my bags tagged all the way The tags seems correct so hopfully I'll find my bags at destination

Now I need to have a BP and AA is taking their time to have it reticketed (F award on CX open at T-34 hours)