That could be part of it. On both sides of my family, no talking was allowed at the dinner table because eating dinner was a serious business to be taken care of as efficiently (quickly) as possible. I think there was too much farming in the background on both sides, so there was that thing of needing to get to bed soon after dinner because you had to get up at sunrise and by the time I came along, you didn't have to get up at sunrise to milk cows or feed chickens but rather to commute to a job you hated in order to keep up with the Joneses.
I can identify with that to a point. I was raised in a farm community although my folks were not farmers. I ate at the home of my childhood neighborhood best friends, etc. and as a young adult dated a farmer or two or one from a farm family....
The best friend, her family was pretty good prob thanks to mom but the ones I dated later on, wow... It was like a free for all for food, very, very diff than how I was raised. And a rush... Come in, eat and get back out and do the work...
We also worked hard, the farm families actually had more money than mine, but I honestly had never seen anything like it...
I'm not going to say in ours the conversation was always something, sometimes you ask a kid what did you do at school today, and parents get a short answer, or how was your day and it is a "fine" but we were never in a rush even though you'd think the folks would have wanted to be having to work all day, etc.
But sometimes it was, sometimes it was fun even... I would not trade it.
And in our family it was cleanup and dishes after supper only by the kids, not the folks, sweeping the floor, the boys took the garbage out, fed the dog, took the slop out (food scraps), etc. We made wood. There were always chores.
My dad isn't the biggest talker and his parents were farmers but my mom was not.
Anyhow yeah, with farming, I saw things differently than how we did them in most cases, some still sat down together and talked but yes, it was shovel it down and get out there to do chores... And often not eating together.