Trying to switch to Bluetooth Classic

In order to interface with another system I need to be able to use Bluetooth Classic.
I found a thread on the Nano IOT 33 forum (Can the NANO IOT 33 run Full Bluetooth (NOT BLE)? - #33 by Klaus_K) where people have been successful in switching from BLE to Bluetooth Classic. By following this it looks as if I am making progress. After uploading the SerialToSerialBT sketch to the ESP32 in Windows I can see the Bluetooth name of my MKR WiFi 1010 and I can pair to it. Furthermore windows allocates two coms ports one for incoming and one for outgoing comms. I cannot however connect to this paired device.

Has anyone had any joy in getting this to work?

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