diff --git a/Promise.js b/Promise.js
index 9970691..e1fa695 100644
--- a/Promise.js
+++ b/Promise.js
@@ -294,6 +294,8 @@ object.Constructor('IterablePromise', Promise, {
 			.then(function(){ 
 				return res }) },
 
+	// XXX .chain(..) -- see generator.chain(..)
+
 	flat: function(depth=1){
 		return this.constructor(this, 
 			function(e){ 
diff --git a/README.md b/README.md
index aef5637..f684455 100644
--- a/README.md
+++ b/README.md
@@ -124,6 +124,13 @@ Library of JavaScript type extensions, types and utilities.
     - [Generator helpers](#generator-helpers)
       - [`generator.stoppable(..)`](#generatorstoppable)
   - [Async generator extensions](#async-generator-extensions)
+      - [`<async-generator>.then(..)` / `<async-generator>.catch(..)` / `<async-generator>.finally(..)`](#async-generatorthen--async-generatorcatch--async-generatorfinally)
+      - [`<async-generator>.iter(..)`](#async-generatoriter)
+      - [`<async-generator>.map(..)` / `<async-generator>.filter(..)` / `<async-generator>.reduce(..)`](#async-generatormap--async-generatorfilter--async-generatorreduce)
+      - [`<async-generator>.chain(..)`](#async-generatorchain)
+      - [`<async-generator>.flat(..)`](#async-generatorflat)
+      - [`<async-generator>.concat(..)`](#async-generatorconcat)
+      - [`<async-generator>.push(..)` / `<async-generator>.unshift(..)`](#async-generatorpush--async-generatorunshift)
   - [Containers](#containers)
     - [`containers.UniqueKeyMap()` (`Map`)](#containersuniquekeymap-map)
       - [`<unique-key-map>.set(..)`](#unique-key-mapset)
@@ -2486,6 +2493,20 @@ stoppable(<generator>)
 
 XXX EXPERIMENTAL
 
+#### `<async-generator>.then(..)` / `<async-generator>.catch(..)` / `<async-generator>.finally(..)`
+
+#### `<async-generator>.iter(..)`
+
+#### `<async-generator>.map(..)` / `<async-generator>.filter(..)` / `<async-generator>.reduce(..)`
+
+#### `<async-generator>.chain(..)`
+
+#### `<async-generator>.flat(..)`
+
+#### `<async-generator>.concat(..)`
+
+#### `<async-generator>.push(..)` / `<async-generator>.unshift(..)`
+
 
 
 ## Containers
diff --git a/generator.js b/generator.js
index f91f25b..01a06bd 100644
--- a/generator.js
+++ b/generator.js
@@ -484,11 +484,14 @@ object.Mixin('AsyncGeneratorProtoMixin', 'soft', {
 			for await(var elem of that){
 				res.push(elem) }
 			_resolve(res) }) 
-		resolve
-			&& p.then(resolve)
-		reject
-			&& p.catch(reject)
+		p = (resolve || reject) ?
+			p.then(...arguments)
+			: p
 		return p },
+	catch: function(func){
+		return this.then().catch(func) },
+	finally: function(){
+		return this.then().finally(func) },
 
 	// XXX might be a good idea to use this approach above...
 	iter: stoppable(async function*(handler=undefined){
@@ -537,7 +540,6 @@ object.Mixin('AsyncGeneratorProtoMixin', 'soft', {
 
 	// XXX
 	// 	slice
-	// 	chain
 	// 	...
 })