Nice description Matt.
I am in the process of putting another article together, that covers this topic, for the "Everyday Diagnostic" section of the Pico site.
Ignition primary & secondary can be very confusing. When I started scoping & I had similar questions to those of Willem. The scope really does help you understand electrical processes that were previously just a fog in the mind (That's the way I felt anyway
A good question Willem! Keep an eye out for my article. I think it will raise more questions like the one you asked.