This reminds me how different networks have had similar shows sometimes.
As I recall, the Addams Family debuted on ABC at the same time The Munsters were on CBS.
I Dream of Jeannie was on NBC when Bewitched was on ABC.
Bewitched and I Dream of Jeannie were produced in the same studio complex. Apparently there was some bad blood between them over script ideas being stolen (easy to do given their premise).