Not sure what you mean by this comment? BA1336 was diverted to MME even though NCL was open again by the time it landed at MME. The Later BA1338 did indeed land at NCL just after 10pm. No doubt the passengers on the later flight were out of the airport before any coaches/taxis had ferried the earlier passengers from MME to NCL.

From checking, looks like the return has still not left MME, now scheduled to be 23.15 and due to arrive at LHR at 23.17 :confused