@Corjan-Meijerink Hi Corjan, Definitely no VPN or oddball DNS settings. Simply a stock Pixel 6 running Google Fi as my mobile provider. Google Fi piggybacks on T-Mobile towers in my area.
If it happens again, I'll contact support. I went out for a Christmas ride this afternoon for an hour using a planned route, and all functioned well. (I didn't go through the area I had a problem with, though.)
Thanks,
Vinnie