How to use/setup ZBT-2 for Thread

Now having a ZWA-2 switched my ZWave integration to Z-Wave JS UI. And this functions beautiful: separated my hardware and its maintenance/monitoring/setup (config; software updates) from the openHAB setup.

Also have a ZBT-2, which I intended for Zigbee and Zigbee2MQTT. But because my number of Zigbee devices is low, and like the long antenna, want to use this for Thread.

Found 2 hits on this forum for ZBT-2

The ZBT-2 only has a USB connector, and most likely WiFi.
While looking for documentation could not find a hint for the ZBT-2 would be functioning a border-router (Thread-WiFi), so thread messages are passed using USB.

Was looking for a Thread2MQTT solution, but looks like it is not there.

Support openHAB ZBT-2 for Thread, or should I use this for Zigbee and get a Thread-Border router for Matter…

My understanding is the openHAB Matter binding will not provide TBR capabilities. You need to get a separate TBR.