

Similar struggle. I told my folks (they live 2hrs away and I see them every 2 mo.) that they need to choose: a relationship with me or talking about politics. At first I gave a couple warnings, but after maybe 3 or 4 times. I reiterated, me or politics, and left without another word. Works with phone calls too. “Did you hear what Bide” click - I hang up.
Treat them like dogs - they’re trainable. If you abruptly leave or hang up every time, eventually they’ll get the hint. If not, they’ve made their choice and if it’s not you, then you’ll need to move on.
I didn’t travel 2 hours to talk about someone I’ll never meet. Let’s talk about ourselves and what’s new in our lives. What’s going on in the garden, what’s new in the office, whatever happened to what’s-her-name you used to hang out with.
I lived in Germany for several years and moved to the U.S. and purchased a “fixer-upper” home. On the docket for replacement were the windows. To make a long story short, the cost of replacing every window on the house with a normal American window was within ~$1k of the price of a single “German” window. The cost to replace all of the windows with the German style was nearly the total price of the home itself.
So yeah, I would love to have those windows, but they’re not made or at least readily available in US markets.