Punt on summarizing extension exceptions

Author: MasterKale

index.bs

@@ -2259,8 +2259,10 @@ authorizing an authenticator. When <code>|options|.{{CredentialCreationOptions/m
 [=[WRPS]=] can encounter a number of exceptions from a call to {{CredentialsContainer/create()|navigator.credentials.create()}}.
 Some exceptions can have multiple reasons for why they happened,
 requiring the [=[WRPS]=] to infer the actual reason based on their use of WebAuthn.
-Some exceptions that can be raised during processing of [=WebAuthn Extensions=]
-defined outside of this specification may not be listed here.
+
+Note: Exceptions that can be raised during processing of any [=WebAuthn Extensions=],
+including ones defined outside of this specification,
+are not listed here.
 
 The following {{DOMException}} exceptions can be raised:
 
@@ -2832,8 +2834,10 @@ The steps for [=issuing a credential request to an authenticator=] are as follow
 [=[WRPS]=] can encounter a number of exceptions from a call to {{CredentialsContainer/get()|navigator.credentials.get()}}.
 Some exceptions can have multiple reasons for why they happened,
 requiring the [=[WRPS]=] to infer the actual reason based on their use of WebAuthn.
-Some exceptions that can be raised during processing of [=WebAuthn Extensions=]
-defined outside of this specification may not be listed here.
+
+Note: Exceptions that can be raised during processing of any [=WebAuthn Extensions=],
+including ones defined outside of this specification,
+are not listed here.
 
 The following {{DOMException}} exceptions can be raised: