If you want to link the changes made to your primary radio button with another radio button, you can achieve this by subscribing to its value changes and updating the second radio button accordingly.
Here's a sample code snippet to guide you through this process:
Assuming you have two radio buttons named radio1 and radio2 as FormControl instances:
this.form = new FormGroup({
'radio1': new FormControl(),
'radio2': new FormControl()
});
You need to ensure that when radio1 is checked, radio2 also gets checked, and vice versa.
ngOnInit() {
this.form.get('radio1').valueChanges.subscribe( x => this.form.get('radio2').setValue(x));
}