Just to make sure if I understood it correctly: my new Zenbook Duo should be compatible with some third-party USB-C PD chargers. However, the original charger specs from ASUS are: TYPE-C, 68W (alt. 65W) Ultra mini AC Adapter, Output: 20V DC, 3.4A (alt. 3.25A), 68W (alt. 65W), Input: 100~240V AC 50/60Hz universal, TYPE-C Cable: 240W, i.e. PD not mentioned.
Are the original zenbook duo Chargers using PD technology? I cannot find an authoritative answer.
I do not plan to use alternative charger with the notebook but I wonder whether I could use the laptop´s charger also for my phone while traveling and save myself one charger to carry. The phone (old Google Pixel 4a) requires a USB-C PD 3.0 or greater charger of at least 18 W but there is no upper limit as long as it is PD controlled.