If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.

Which segment did you replay?
What chapter marker was missing?
What explanation would help without a trainer?

Author notes / illustrative keys where applicable:
1. Use this answer to locate the part of the experience that needs explanation. The example issue to investigate is: learners repeatedly search for the demonstration start.
2. A missing chapter marker identifies a topic learners could not revisit efficiently. Add accurate timestamps for the existing recording, without treating easier navigation as evidence that the lesson produced better learning outcomes.
3. Locate the missing instruction or explanation needed to perform the task without a live trainer. Add accurate context at that step, keeping chapter navigation separate from explanatory content.