Hey Richard, the only wasteful questions are those that someone can type into Google and the answer shows up on the first page.
Yours was not a dumb question! How quickly questions get answered depends on the author of the course, since they’re the ones to get notified. Jonathan Williamson isn’t an instructor any longer (it’s just me, Kent, and sometimes Wayne on the Blender side) and gets a ton of notifications, so it’s likely that yours just hasn’t been seen yet.
We’re hoping to improve the way questions are seen and answered in the future, but for now feel free to @ mention me in a comment in the question or re-post to the Community if you don’t find an answer.