I am working on a hobby project to develop my own Bluetooth peripheral. The platform for this peripheral is a Espressif ESP32-based TinyS3 from Unexpected Maker. I have defined the bluetooth device & service information using custom UUIDs. Using nRF Connect or Light Blue mobile applications I can discover and connect to my device. I receive confirmation of this BLE connection and modifications to the my BLE Service from my code on my TinyS3. I am attempting to write a custom software program that uses the onboard Mac Bluetooth hardware to detect this device. I am technically using Qt's Bluetooth infrastructure via PySide6 [python]. Despite being able to see my device in the mobile BLE applications, my software as well as the Mac Bluetooth System Services does not detect my BLE device. I am broadcasting advertising messages at a 250ms rate, and since they are findable by these mobile applications, I am wondering if MacOS has specific requirements for advertising data for what it considers as a "legitimate/ connectable" device. Any help would be greatly appreciated. Thank you!