Update: I was able to get everything to work—but I couldn't get the RX 6700 XT's drivers installed in Ubuntu. There are probably a few reasons for that... but it definitely wasn't as straightforward as I had hoped. I'll post an update soon.
Last year, in my work towards bringing up a graphics card on the Raspberry Pi, I was fortunate enough to acquire an AMD Radeon RX 6700 XT at near-retail price (thanks to a viewer who assisted my luck!).
This year, as part of a slightly-zany video building a Raspberry Pi into a standard desktop PC, I was able to gather enough parts to make up a halfway-decent gaming/creative PC centered around the RX 6700 XT, and instead of putting it together myself, I thought I'd share in the potential disaster in a live stream—tune in at 10 a.m. US Central time on March 3 (or watch below):