Hope this is the right forum for these questions. I've booked a J reward flight with Qantas (actually travelling CX) from HKG to FRA.. I then need to connect with BA to LHR. My CX flight lands at 6am and I am looking at purchasing a BA flight that departs at 7.25am.

Two questions:

1. Will CX be able to tag my luggage through to LHR so that I just have to go to the transfer desk at FRA and pick up our boarding passes for the BA flight

2. Will the 1hr 25 min connection time be enough...and what happens if CX is delayed and we miss out flight

The next BA flight is at 11.20am so I would much prefer to get on the earlier one. I've never had to transfer to a different airline like this before so any other things I may need to know is appreciated.

Thanks.