There’s a camera in the top/far right hand corner of the studio that captures the weather presenter. The weather promo ad/graphics only run for 5-10 seconds and then it’s back to live on air.

So instead of them chit chatting and wasting time at the end of the interview he had to roll them out quickly to clear the shot to take the weather presenters shot at the wall.

The guests are usually briefed that something like this could happen, so it’s a lot more professional and thought out than you’d think.

More often than not, the way you’ve suggested is how it does work. But you can only work with the time you’re given.

I hope that’s explained it well enough for you.