@Walter Finnin I moved this to the Pixel 3A channel; it doesn't explicitly say it, but that covers the 3a XL as well. The 3a XL has more in common with the 3a than with either the Pixel 3 or 3 XL.

The 3a line offers 95% of the experience of the 3 line but at ~50% of the price. To get there, compromises were made - and that includes the omission of wireless charging, like @ocnbrze mentioned. I'd avoid placing your 3a XL on a wireless charging pad. It won't charge the phone and may just make it hot, which is not great for the phone's battery.

May I ask where you saw that the 3a XL supports wireless charging?