Address review comments.

index.bs

@@ -9994,7 +9994,7 @@ The characteristics of a named constructor are described in [[#named-constructor
 
 <h4 id="interface-object" oldids="es-interface-call,es-constructible-interfaces">Interface object</h4>
 
-The [=interface object=] for a given [=interface=] is a [=function object=]
+The [=interface object=] for a given [=interface=] is a [=function object=].
 It has properties that correspond to the [=constants=] and [=static operations=]
 defined on that interface,
 as described in sections [[#es-constants]] and [[#es-operations]].
@@ -10095,9 +10095,8 @@ implement the interface on which the
 [{{NamedConstructor}}] extended attributes appear.
 
 If the actions listed in the description of the constructor return normally,
-then the [=named constructor=] must return an object that implements interface |I|.
-This object also must be associated with the ECMAScript global environment
-associated with the [=named constructor=].
+then those steps must return an object that implements interface |I|.
+This object's relevant [=Realm=] must be the same as that of the [=named constructor=].
 
 <div algorithm="to create an named constructor">
 
@@ -10252,7 +10251,6 @@ The name of the property is the [=identifier=] of the interface,
 and its value is an object called the
 <dfn id="dfn-legacy-callback-interface-object" export>legacy callback interface object</dfn>.
 The property has the attributes { \[[Writable]]: <emu-val>true</emu-val>, \[[Enumerable]]: <emu-val>false</emu-val>, \[[Configurable]]: <emu-val>true</emu-val> }.
-The characteristics of a legacy callback interface object are described in [[#legacy-callback-interface-object]].
 
 The [=legacy callback interface object=] for a given [=callback interface=]
 is a [=function object=].