My parents developed a habit of sitting in the same room while staring at separate screens. When I visited home, it bothered me. So sometimes I secretly restarted the router and pretended the internet was down.
Within ten minutes, they would start talking, complaining about relatives, discussing neighbors, or arguing about old memories. I did this for almost a year before my father finally caught me near the router. He looked at me, understood, and said nothing. The funny thing is that afterward, he started occasionally "checking the router" himself.