Ahh, unloaded, so (little to) no reflected impedance!

In this simplified circuit, L2 is on top of L1, and is the 220V input, so the same current flows in L1.

This is not true. In the bottom inductor you have all the magnetizing current (about 7A), but in the top inductors there is almost no current, because there is a negligible load.

In a typical autoformer, as someone mentioned earlier, output current circulates in reverse in the primary, for a smaller resulting current.

Use Kirchoff at the junction of L1 and L2.