Shifting feedback confirms that the bike is connected to the Stages Link app to initiate a gear shift. The feedback will be an audio tone if the connected device has audio on, or three vibrations if the device is set to silent. Shift feedback can be turned off in the StagesBike menu of the Link app. This setting is specific to a particular virtual setup: disabling feedback only applies to setups it has been manually disabled in.
To disable shifting feedback: