If your workload increased then I think you weren’t Using your time efficiently.
Were you also working in school at the same time as providing home learning?
We had full bubbles of key work and vulnerable children so all but 4 staff were in class full time throughout. On top of this many were also recording voice overs and videos for the home learning, producing flip charts for home learning etc. . So yes, their work load was higher, not due to time management but simply as they had to provide both in class support and home learning resources.
My job increased too. My role is a bit different as I oversee all the home learning, so I was doing that for long hours each day for that, including weekends and the holidays. Again, not time management issues, just the nature of the new role. It improved as time went on as systems got smoother, I had templates from previous sessions, etc. I also got better at not replying to remote learning messages etc early morning and late at night,
At present we have bubble closures and children self isolating. Live lessons aren't suitable for us here so many things needs doing more than once - for those in class and for those at home. The lesson things that work well in person don't work so well remotely, especially for little ones.
I'm currently off sick recovering from covid, but still doing some home learning stuff. Although shattered still, I can at least sit up and do re ore learning to take the pressure off those in school.
So yes, some staff did work longer hours and had increased work loads during lock down.
I can imagine if you didn't have many children in school itself then it might have been easier.