Hi all, apologies in advance if this has been covered.

My wife and I are on BA114 JFK-LHR tonight, then getting on a BD flight from LHR to ADD.

The LHR-ADD leg on BD are award tickets, booked separately from the BA tix. Is it possible to interline our bags from JFK-ADD? And if so, is it worth the increased risk of lost bags at LHR? Assuming no delays, we have 5 hours at LHR.