To verify that nRF Logger for Bluetooth Host Controller Interface is working as intended in Wireshark, check if one or more entries of nRF Logger for Bluetooth Host Controller Interface show up in the External Capture pane in the Wireshark GUI after refreshing the interface list.
On Linux, you can also verify the setup by listing extcap interfaces in the terminal:
wireshark -D
The output should resemble the following:
xx. /dev/ttyACM2-hci (nRF Logger for Bluetooth Host Controller Interface)