They know the live feed is "on" so I would take everything that you see as saved up for the moment.
Saira waited for the LF to start before starting to whisper, just loudly enough, about the Lewis-Marnie issue.
That issue itself sounds pathetically contrived.
Katie etc in the bedroom looks quite staged and melodramatic as well.
This is when LF is worse than useless, it is all part of the staged "drama".
You really can't take anything you see at face value any more in BB.