According to the examiners handbook, it would appear that the day STARTS with a pre flight brief and the skill test, followed by the long briefing and TK knowledge quiz as per this extract from the manual below, is this not the order of the days events?
Long Briefing (Lecture) and Theoretical Knowledge Questions
On completion of the flight phase I will ask you to deliver the prepared long briefing/lecture. Following that there will be a period of ground questioning. I will ask you some student questions on subjects chosen from the theoretical knowledge subjects etc etc.