When does the notes’ banker rule say a banker cannot be compelled in a proceeding?

The notes state that a banker is generally competent and compellable in matters relating to the banking profession, but cannot be compelled in a proceeding to which the bank is not a party. The stated limitation is tied to the bank’s party status. **Key takeaway:** Apply the bank-party condition stated in the material. **Glossary:** Banker: a witness whose professional banking role is relevant to the evidence.