I asked them whether they considered GNAP via slack.

They are chartered here:

To look at AuthN that breaks when browser primitives are removed.

They are currently focused on OIDC, SAML, WS-Fed.

The reason I asked them was in relation to the questions we have discussed regarding “What can GNAP replace”.

Clearly GNAP can replace OAuth, but I think you both have now confirmed that GNAP does not replace OIDC, or federated identity…

Grant Negotiation and Authorization Protocol (GNAP)