A claim of privilege is not defeated by a disclosure which was (a) compelled erroneously or (b) made without opportunity to claim the privilege.
Privileged Matter Disclosed Under Compulsion Or Without Opportunity To Claim The Privilege
Mont. Code Ann. tit. 26, ch. 10, Rule 504, under Article V. Privileges.
Mont. Code Ann. tit. 26, ch. 10, Rule 504