ABRP appears confused by multiple BLE devices

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/report-a-bug/abrp-appears-confused-by-multiple-ble-devices/
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I have been having problems with my OBD BLE dongle for a few months. Performance is intermittent - sometimes it works perfectly and sometimes not at all. Particularly frustrating is when it shows connected and reading car data (green Bluetooth icon on Android Auto), but the battery % diverges from what the car shows (and last successful update appears to be minutes or hours ago in app). I have been trying to establish a pattern and finally realised I also have a BLE smart watch (fossil, in case relevant). The watch occasionally also reports faults and I've realised ABRP works when the watch reports disconnected from my phone, and ABRP plays.up when it's connected. This could also explain how ABRP thinks it is connected to the dongle but fail.to read data if it had somehow transferred it's connection to the watch. The issue also.makes pairing the dongle difficult (it often fails).

Phone is pixel 7 (Android 14) and issue has been ongoing for several months across several ABRP releases. Present in both Android Auto and phone modes.

Looks like ABRP might not validate all data received as coming from expected source?