Neither of those is correct, the connectors on the cable for the new Leaf are Type 2 both ends. They look slightly different as one is male and one is female.Yes, a 3 pin one and the Type 2 to 3.....or as you say, 1 to 2.
The old Leaf has a type 1 connector and used a Type 1 to Type 2 cable for public charging, Type 1 connecting to the car, type 2 connecting to the charger.
The change is because all electric cars now have to have a type 2 connector in Europe to standardise things. It will make things simpler as we go forward.
Maybe the confusion is that it is called mode 3 charging. If you want to read further try here
Mode 1 isn't used.
Mode 2 is from a 13amp plug
Mode 3 is to a fixed charger, home or destination chargers.
Mode 4 is a Rapid