Estimating timings on a course

So the above link shares: 

1. Open your course in Articulate Storyline.
2. In the Articulate Storyline ribbon, click on the Publish
3. {not listed - Pick "Web" / "Publish to Web"}
4. In the dialog box that appears, click on the ellipsis button to the right of your course title.
5. Next to Duration you’ll see a drop-down menu with the default selection Calculate Automatically. To the right of this, you can see Articulate Storyline’s estimated duration of the course. 

I think this only yields a pretty broad time. "About 4 minutes" is what I see on my current training.