I get my own favourite witness on the doorstep now and then. He is 96, and I like him telling about his life. He still looks fit. I think he will still be doing his rounds when he is 100. We've agreed not to agree on beliefs.
Lately he gets accompanied by a cute autistic 15 yo.
Sometimes others knock too, and I tell them I am on the list of Mr B, then they leave, just like that. When Mr B stops doing his rounds, I will stop listening to the witnesses. Or I will ask my ex to drop by for a serious conversation. Last time he did that, we were on a banned list for over a decade.
We have loads of witnesses around. So, the occasional bus filled with doorknockers stops here now and then. Or they come in a pack of cars. When I was a postie, I saw two younger witnesses smoking in some marijuana courage before going on their path.