The connection flow that should be examined to gain this insight is device connection to Device Services. Device Services is a component of Workspace ONE UEM that handles device enrollment, management, and communication. Device Services also hosts the AWCM service, which is responsible for delivering push notifications to devices. If devices have stopped updating their last seen time within the console, it could indicate that there is a problem with device connection to Device Services. The administrator should check and resolve any issues with device connection to Device Services.