Was kitty and Matt dillon related that played on gumsmoke?

Kitty, played by Amanda Blake, and Matt Dillon, portrayed by James Arness, were not related in the television series "Gunsmoke." They had a close, complex relationship, with Kitty serving as the saloon owner and Matt as the town's marshal. Their dynamic was one of friendship and occasional romantic tension, but there was no familial connection between the two characters.