Reminds me of an Air New Zealand paxing flight years ago, from BNE/CHC ON ZK-NBA B767 219 (shows you how long ago that was). The flight was full all classes so myself and an off duty FA were offered the 2 jump seats.
During the flight there were 3 aircraft flying CHC/BNE on the same track flying 1000 feet above us. It was fantastic and I have never forgotten that day, something that the passengers in the cabin would never see !!
Cheers all