I'm travelling with 2 others QF93 on 2 different PNRs (MEL-LAX). Originally we were going to drive LAX-SFO but have decided to fly. Are there any specific things to look out for when booking a 'connecting' flight through AA.com? Such as: - All 3 US tickets will be booked in one additional PNR (OWE). - I'm going to allow 4-5 hours for transit. In the unlikely event there is a major QF delay and we miss the AA flight would QF or AA help because of the One World alliance or only if on a single PNR? - Are there any baggage limit/weight issues or because it's tagged through from Melbourne it should be fine (even though we have to escort the baggage at LAX)? I read on the AA site a rule about within 24 hours of an INT leg but I wasn't sure if that only referred to AA or a single PNR. - Anything else I've missed or useful tips? Thanks in advance.