Pictures of the RAF A330 on the ground in Commodoro Rivadavia:
Didn't take long for those to appear online.
Wouldn't be surprised if that nearly 16hr direct flight isn't a record for Voyager ops, or even for the A330 in general.
Great Circle mapper says that BZZ-CRD is 12,500km
Airbus website says max. range for the A330-200 is 13,450km
Good work.