It's completely right that five lessons a day at school doesn't equate to five hours of the teacher talking.
To be honest, many classes are getting more input and more independent practice remotely than last term, if we just add up time.
In September, entrances were staggered, so ten minutes of lessons were lost for some, twenty for others. Work had to be uploaded electronically, so lessons were finished early.
Having thousands of children sanitise their hands on the as back in from break took away learning time. It was raining outside and there was nowhere to sit and eat, so lessons were cut short for 15 minutes of eating at a desk in the classroom, so twenty minutes of fresh air was still allowed at lunchtime. Same at the end of the day with exits from the building.
Incidentally, those talking about mental health issues and eating disorders increasing - we saw this in children not wanting to eat next to the person they shared a desk with (alphabetical order) or use the toilets.
Ordinarily, face to face teaching is better than online. But at the moment five hours of logging in, listening, talking, thinking, trying and improving is safer and working at least as well as the mess of repeated isolations last year. It's a pain collecting a child who's a close contact and keeping them at home for 10 days, but you should see the chaos when that child is served with a letter and removed from the room by a senior member of staff. Children nearby are instantly clamouring to be let out too, because they feel at risk. And lessons do not just continue smoothly.