This is a macOS feature its part of the enhanced privacy and security setting telling you that an app or devices is using a screen record function to extend displays,
You may also see it you use things like zoom and remote desktop Desktop software
it isn't actually recording anything though
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MacBook Air 15” M2 Midnight
3x Dell U2723QE 27” 4K
Alogic DX3 Dock
DL 1.10.0 Build 117
Sonoma 14.1.1
My Setup
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