Bluetooth problems have a bad habit of telling you pretty much nothing. Your earbuds can display as connected but refuse to play any music, a car can play music just fine but not accept calls, or a wearable can keep dropping out for no reason.
Google has given Pixel owners at least some direction on where to start troubleshooting. Bluetooth Diagnostics can help test a problematic accessory before you begin forgetting devices, rebooting everything in sight and pairing it all again because, well, Bluetooth.
Now, before the Android community comes together to rejoice, here's the catch. It is a Pixel feature, and Google currently lists Bluetooth Diagnostics for Pixel 6 and newer, including Fold models.