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face: "Made from the record as of 9 November 2026."
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# Substrate-Observation as an Alternative to Envelope Coordination for Concurrent Sessions

Internet-Draft, revision 04, 23 Oct 2026. Not adopted as a standard.

## Official text and revision history on the IETF datatracker

https://datatracker.ietf.org/doc/draft-morrison-substrate-observation/

/protocols/agent-channel-fan-out/