I am going to try and attach a Youtube link that shows the machine in operation.
You can see the off center running of the honing machine clearly. The operator doesn't have a smooth stroke or pattern which makes perfect results difficult. He also is doing one at a time which is slower and typically produces some taper and wears the stones unevenly. But at least you sort of get an idea of how the process works.
https://www.youtube.com/watch?v=j5UqmpMME88