There is more than one way to skin a cat so what you are describing is not really a “standard” as much as just one way to split your overall weekly volume. A full body focker is probably what you need to hit all body parts equally and you can progress through the workouts to build to 6 days training if you need. So, on a single week you would do 1.5 weeks of the programme. So long as you can recover. Having said that, there is probably no inherent benefit of working out over 6 days as opposed to 4.