In the case of my grandfather he just went all in on his batshit insane stories, his first one was apparently how he electrocuted his balls. My grandmother avoided him initially, but after she realized he was the charming type of insane she warmed up to him. The fuck were people doing in the 70s?
Well that and using chemicals that cause cancer if you don't use a mask with a filter. He came to regret that one. My grandfather was a walking OSHA violation.
The free will question is much closer to the conversations I was having with my wife before we got married. We were talking for hours every day, I can't imagine spending hours on small talk.
Well that wasn't really the question. But actually I met her when we were both pretty young so I don't recall it being much of an issue. We probably talked about kid stuff.
What's your favorite color? Do you like hot wheels? Perhaps our definition of small talk differs from others. To me it's a starting point to get into deeper conversations.