Well no more responses for a while so I'll close it out with what I have working now. Note that there is an overlay already on the screen before the new overlay is shown, so it doesn't matter which overlay is in the foreground. Also note that AutoInput must tap twice, making the action slower than it should be.
Task: Example
A1: Show Scene [
Name: SoundDetectedNotif
Display As: Overlay, Blocking
Horizontal Position: 0
Vertical Position: -76
Animation: None
Show Over Keyguard: On
Continue Task Immediately: On
Allow Outside Boundaries: On
Blocking Overlay +: On
Overlay +: On
Continue Task After Error:On ]
A2: Variable Set [
Name: %tap
To: %TapPoint
Max Rounding Digits: 3 ]
A3: AutoInput Action [
Configuration: Type: Point
Value: %tap
Action : Click
Times: 2
Interval: 120
Timeout (Seconds): 1
Continue Task After Error:On ]