I have made numerous searches, but nothing really answered the problem to the calculation I am trying to solve

From

https://wiki.airlinemogul.com/index.php/FAQ#How_can_you_calculate_block_time.3FAirbus A320-200

Speed 469 (I assume nm/p/h)

Range 3504 nm

Turnaround time 0.72 (I assume is 0h43m)

Route

1071nm

Flight time calculates as route distance divided by speed

1071 / 469 => 2.28 hours or 2h17m

Block time calculation

"A one way flight can be calculated by dividing the flight length by the aircraft speed (e.g. 1000 miles / 500 miles per hour = 2 hours), then you have to add the turnaround time"

2.28 + 0.72 = 3.00 (3hr00m)

However AM has 3.61, a difference of 0.61

Other routes

220nm the difference is 0.67

1128nm the difference is 0.60

1545nm the difference is 0.64

What did I miss?