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You may be able to do this with the Ubertooth One but I don’t think it supports all Bluetooth versions so double check first

Use an Android phone with Bluetooth snoop logging turned on and then use wireshark to look at the BLE packets.

I bought one hoping the same thing - I got it a couole days ago and it seems like that’s not implemented (or maybe possible? Not sure).

Hmm that’s a shame, I would definitely jump on board if it was possible to do so.

probably not. Bluetooth is encrypted so unless you have NSA level resources or the password/secrets involved you'll be out of luck.