Immediately after the Exorcist segment came the gigantic baby by the moon segment.
The baby, I'd have to think, is the coming Royal Baby, the blue color of the stadium and floor not just representing the night but the 'blue blood.'
The moon, of course, is Diana - or Kate - they are interchangeable. Recall all of the times I have pointed out to you how many times that (especially early this year) Kate was compared to her dead mother-in-law.
Diana is the moon goddess by any stretch of the imagination.
And since the baby comes right after the Exorcist segment (and is made up of sheets and bedding from the children in the NHS segment) I suppose we are being led to believe that this baby is already full of the devil.