How can I stop syncing phone calls between iPhones?

I have two phones on the same iCloud account. (I know each should have their own so don’t tell me that). I had to log out and back in to my iCloud account and now I’m seeing the call log from the other device, when I did not see it before. I’m not sure what option to change as I’m on the newest iOS and online help shows older options in settings.

can someone help me please?

thank you.

[Re-Titled by Moderator]

Original Title: stop syncing phone calls across devices