Do the arithmetic on that night

Take an eleven hour night for the sake of round numbers, which is roughly what it would have been.

Half of it asleep is about five and a half hours. A third of it in prayer is a little under four. A sixth asleep again is nearly two. Add the two sleeps together and you get around seven and a half hours of sleep, in two blocks, with the standing placed between them.

Now compare that with what usually gets recommended. Go to bed at midnight, get up at three, do not go back to sleep, and be at work at eight. That is not the schedule in the report. It is not even close to it, and nobody can run it for long.

The most beloved night prayer in the tradition sits inside an adequate night. That is the finding, and it is sitting in a sound report that hardly anybody quotes.