Copilot Call Delegation Does Not Work with Compliance Recording Applications

You isolated Copilot Call Delegation as working until a compliance-recording policy assigns a recorder, after which the voice delegate no longer joins. Microsoft currently delivers Call Delegation through Frontier early access, and its published known-issues list does not document compatibility with compliance-recording applications. Compliance recording uses certified third-party bots automatically invited by policy. Two call bots in the same screening path is therefore a plausible interoperability gap, not a guaranteed configuration. Confirm Teams is current, supported, and set to English. In an approved test account only, compare calls with and without the recording policy and note whether strict recording is enabled; do not weaken production compliance. Capture UTC time, caller, callee, call ID, policy assignments, and recorder logs. Report the call in Teams under Copilot Call Delegation and open a joint case with Microsoft and the certified recording vendor. There is no documented admin switch for this combination.