1. the OAuth Server to Server Authentication as defined in the Bulk Data exchange IG. <-- now in Smart not Bulk Data
 
2.  fix markdown"  "When mutual TLS is used, it *SHALL* be done in accordance with [RFC8705](https://datatracker.ietf.org/doc/html/rfc8705). There are certain constraints on this RFC that apply across all Da Vinci IGs"