Trying to teach all the elements of the exercise in one go means either it is not covered thoroughly enough or, more to the point, the student doesn’t have the capacity to take it all in at once given it is the first real flying lesson.
Totally agree, but the Regulator (EASA) expects DTOs to adhere to a Training Programme based upon the EASA syllabus that neither seperates exercises into 2 parts nor places any emphasis on doing so. It even offers the LAPL option of doing it in 25% less time.