I've managed a couple of very long engineering over-runs lately where we were waiting for rested staff to become available. I've also dealt with the disruption from extreme weather, and other large scale disruption. Even then, exceeding 12hours isn't all that common.
The impression I got from Tio Terry wasn't that it was under exceptional circumstances, but that it was regular occurrence to prevent over-runs. If that is happening on a regular basis, it needs dealing with, because it shouldn't be.
If you read my comments you will see that I have never, ever, suggested that excessive hours should or are worked to prevent over-runs as you suggest above.
I have only said that they are worked because of over-runs.