If you want to apply conditional validation on 'Recovery Email Address' or 'Business Email Address' then you need to add this input as 'abc@gmail.com'.
{{userForm.controls?.emailAddress?.errors?.contains.message}}
If you want to apply conditional validation on 'Recovery Email Address' then you need to add 'Email Address' input as 'abc@gmail.com'.
Conditional Expression with type 'string'
{{userForm.controls?.recoveryEmailAddress?.errors?.contains.message}}