Lol, yes, I watched Hart to Hart when it was on pre-evening tv in the 80s when I was young. (Along with Knight Rider, Simon and Simon, The Fall Guy, and Remington Steele.)

I still love Remington Steele, the others were average, but they still hold a place in my heart. Hart to Hart was more for older people already back then, being about an old married couple, so maybe I'd like it even better now?

I think I saw it on Prime recently, but not for free, you have to pay extra.