David Cameron Refuses Media Questions at LSE

The video captures a live broadcast session where the host interacts with the audience and press, taking questions and providing responses. The session concludes with the introduction of Ariana Bandera, a professor of economics at LSE.

What does the speaker mean by 'we're taking questions from the audience and from the press'?

What is the significance of the statement 'Here we will be off air by that point'?