I think that's lost on a lot of people though, including some/many teachers and lecturers, especially those who enjoy conducting lectures.

Not for OP, but for typical discussion: A good way of getting people to understand how lecturing is really only introductory is to consider learning a sport. You can get lectured for hours, days, years on technique and strategy and reading the play and knowing your team mates. But pull on the boots or put a racquet in your hand and you're starting from scratch.