Of coding, that sounds typical. A lot of us don't feel like meetings and such, are productive or like work. Not to say I'm sometimes not "actively working" as well. I'd say we bring our work home in our heads longer than most though.

In any case, average office worker works less than 3hrs/day https://www.inc.com/melanie-curtin/in-an-8-hour-day-the-average-worker-is-productive-for-this-many-hours.html

Anecdotally, I'd say that this is true as well.