I am not even sure if my question is achievable or completely dumb.
I connect my macbook air (macos High Sierra) to an external display via HDMI. As you know whenever you plug the cable in the laptop the new external monitor/ TV is recognized in System Preferences.
Is there a way to send image to the external display and at the same time not recognize the HDMI connection? I have software that stops running whenever an HDMI connection is established and am wondering whether there is a way to trick it?