@nagelc
I am not very familiar with the whole Arduino BLE Support situation.
But looking at these posts:
https://blog.hackster.io/arduinoble-v1-1-10-adds-ble-central-support-e65256e37982
But more import this blog by Sandeep Mistry:
https://blog.arduino.cc/2019/08/27/ble-central-supported-added-to-arduinoble/
Is it possible that the Arduino Core you are referring to is adapted to support the Nano BLE? Who could check whether this is working?