They should have used Lauda Air!
If BA Willy won't cooperate;
Quick phone call to my mate Richard B. "Hey mate have you got a spare wiz-bang aircraft free this weekend. Doesn't matter; B747/A340, balloon or space vehicle. You choose." Failing that, my mate Bernie of F1 fame. "hey Bernie...........?" No success; my mate Liz, "Hey your Lizziness; got an aeroplane free for the weekend?" No? Next call Privatairr of Switzerland. OMG., No luck. Grovel grovel. it'll never happen, but MOL has shiny B737 doing nothing for the weekend. Damn & blast.
I remember the days the EU Ryder Cup team bombed into USA on Concorde and creamed their rear-ends. That's how to to do it. Wham bam, thank you mam! Job done!