To detect if the attendee is having trouble due to the Weak Network during the Live Sessions in the Event then they can check if the Wi-Fi symbol has turn red. It will be visible as shown in the picture below:
In case if the weak connection continues, the video of the attendee shall go away and the following image will be shown on the screen.
This can be troubleshot by refreshing the Network and joining in again. These features can be experienced best in the Google Chrome Browser.