Considering the schedule has you stopping one task and one time and starting another exactly seven hours later, that’s not seven hours of sleep. Most people don’t stop a task and immediately fall asleep, or wake up and can start working. That gap means less than seven hours of sleep. And for many people seven hours isn’t enough. Sleep deprivation means not having enough quality sleep, it’s not a single number which can be applied to everyone all the time equally.
It's a rough schedule. It's not work to the minute of 11:00pm then start unwinding. You might be pretty unwound by 10:30 and then answer a couple of emails before making a hot drink at 10:45 and calling it a night. It seems a bit silly to overly argue how that can't possibly describe a full night's sleep, when it clearly can.
