Hi Curt:
Great methodology! A well written course with objectives and learning outcomes provides a framework for analysis and an opportunity to develop a strategy to segment the needed leaning into bite size portions. It's a bit like a budget, which is really only a orojection of what might be. But as you well state, things change, interruptions happen, student questions are more abundant (a good thing), planned discussion time takes longer.
I suppose having more rather than less is good, but optimally, good planning and experience with the class minimizes over or undershooting our daily lesson plans.
Regards, Barry