diff --git a/spec.html b/spec.html
index 67526f2..3a41b49 100644
--- a/spec.html
+++ b/spec.html
@@ -130,32 +130,21 @@
GetIteratorFlattenable (
_obj_: an ECMAScript language value,
- _hint_: ~sync~ or ~async~,
): either a normal completion containing an Iterator Record or a throw completion
1. If _obj_ is not an Object, throw a *TypeError* exception.
- 1. Let _alreadyAsync_ be *false*.
- 1. Let _method_ be *undefined*.
- 1. If _hint_ is ~async~, then
- 1. Set _method_ to ? Get(_obj_, @@asyncIterator).
- 1. Set _alreadyAsync_ to *true*.
- 1. If IsCallable(_method_) is *false*, then
- 1. Set _method_ to ? Get(_obj_, @@iterator).
- 1. Set _alreadyAsync_ to *false*.
+ 1. Let _method_ be ? Get(_obj_, @@iterator).
1. If IsCallable(_method_) is *false*, then
1. Let _iterator_ be _obj_.
- 1. Set _alreadyAsync_ to *true*.
1. Else,
1. Let _iterator_ be ? Call(_method_, _obj_).
1. If _iterator_ is not an Object, throw a *TypeError* exception.
1. Let _nextMethod_ be ? Get(_iterator_, *"next"*).
1. If IsCallable(_nextMethod_) is *false*, throw a *TypeError* exception.
1. Let _iteratorRecord_ be the Iterator Record { [[Iterator]]: _iterator_, [[NextMethod]]: _nextMethod_, [[Done]]: *false* }.
- 1. If _hint_ is ~async~ and _alreadyAsync_ is *false*, then
- 1. Return CreateAsyncFromSyncIterator(_iteratorRecord_).
1. Return _iteratorRecord_.
@@ -203,7 +192,7 @@ Iterator.prototype
Iterator.from ( _O_ )
1. If _O_ is a String, set _O_ to ! ToObject(_O_).
- 1. Let _iteratorRecord_ be ? GetIteratorFlattenable(_O_, ~sync~).
+ 1. Let _iteratorRecord_ be ? GetIteratorFlattenable(_O_).
1. Let _hasInstance_ be ? OrdinaryHasInstance(%Iterator%, _iteratorRecord_.[[Iterator]]).
1. If _hasInstance_ is *true*, then
1. Return _iteratorRecord_.[[Iterator]].
@@ -430,7 +419,7 @@ Iterator.prototype.flatMap ( _mapper_ )
1. Let _value_ be ? IteratorValue(_next_).
1. Let _mapped_ be Completion(Call(_mapper_, *undefined*, « _value_, 𝔽(_counter_) »)).
1. IfAbruptCloseIterator(_mapped_, _iterated_).
- 1. Let _innerIterator_ be Completion(GetIteratorFlattenable(_mapped_, ~sync~)).
+ 1. Let _innerIterator_ be Completion(GetIteratorFlattenable(_mapped_)).
1. IfAbruptCloseIterator(_innerIterator_, _iterated_).
1. Let _innerAlive_ be *true*.
1. Repeat, while _innerAlive_ is *true*,