Under what condition can a lawyer communicate with another lawyer's client regarding their representation?

A lawyer can communicate with another lawyer's client regarding their representation primarily if granted consent by the other lawyer. This aligns with the Model Rules of Professional Conduct, which emphasize the importance of ensuring that communication respects the established attorney-client relationship.

Consent from the other lawyer is essential because it helps protect the client's rights and the integrity of the existing lawyer-client relationship. It acknowledges that the represented party has chosen their attorney to handle their legal matters, and any communication by another lawyer could potentially disrupt that relationship unless the attorney representing the client has agreed to it.

While it's true that other scenarios might allow for communication under specific circumstances, such as with the client's permission or if the client initiates contact, these do not replace the necessity of the other lawyer's consent as the primary means under the Model Rules. This principle ensures that all parties' interests remain protected and that ethical boundaries are maintained in legal practice.