Yeah it might be. Great Circle Mapper shows TLS-MEL at 10,494 miles but I don’t know the exact route the plane took and don’t think there is a track anywhere. SIN-ATL is 9,969 miles but the southern route that DL took to take advantage of the tailwinds puts the distance at 10,737 miles.
Here’s another long A332 flight, the delivery of HA’s second Bus, 8,050 miles into the wind.