Nano 33 BLE - Scanning and advertising

Hi everyone, new to the forum, hope i've choosen the right section.

trying to setup two Nano 33 BLE connecting to eachother via BLE. I'm using ArduinoBLE.h library.

I have some doubts i can't manage to solve myself.

  • If i change BLE.setConnectable() while advertising will the change take effect?
    or do i have to stop advertising and then resume?
  • How can we change Scan parameters like Scan Window and Scan Interval?
  • How can we change Tx power?

Any help is really appreciated, thanks a lot,
Luis