diff --git a/concat.lwg.feedback.md b/concat.lwg.feedback.md
index 0c0d318..115726f 100644
--- a/concat.lwg.feedback.md
+++ b/concat.lwg.feedback.md
@@ -53,6 +53,13 @@
   - Hui: I just learned we can specify that way. Not sure if you like it?
   - Levent: Love it. (https://eel.is/c++draft/const.iterators.ops#17 right?)
 
+- [Done] mattermost: TZ/CC: wording the concat-bidirectional
+  - Hui: From the chat history they don't seem to be happy about our wording and had some alternative wordings in the chat
+  - Levent: Leave this to next round?
+  - H: I am bit confused with "Model" vs "Model and Satisfy"...
+  - L: I am not sure where we pulled this from. I found this: https://github.com/cplusplus/draft/blob/1be4801ac1f90aca9a8f5804a48e8bcd082f5bb9/papers/n4821.md?plain=1#L564
+    It seems if we simply say "models" that should suffice here.
+
 # Nothing to do
 
 - [Nothing to do] that "expect" needs to be "except"
@@ -65,10 +72,7 @@
 
 # Todos
 
-- [TODO] mattermost: TZ/CC: wording the concat-bidirectional
-  - Hui: From the chat history they don't seem to be happy about our wording and had some alternative wordings in the chat
-  - Levent: Leave this to next round?
-  - I am bit confused with "Model" vs "Model and Satisfy"...
+
 
 - [TODO] when doing zip_view and cartesian_product we added maybe_const so we don't need to do that everywhere and we should do that here, too
   - Hui: ?
diff --git a/concat.md b/concat.md
index bc99d72..9bfc8ca 100644
--- a/concat.md
+++ b/concat.md
@@ -582,10 +582,10 @@ concept @_concat-bidirectional_@ = @*see below*@; // exposition only
 
 :::bq
 
-[3]{.pnum} `@_concat-bidirectional_@` is satisfied and modeled for `Rs...`, if and only if,
+[3]{.pnum} `@_concat-bidirectional_@` is modeled by `Rs...`, if and only if,
 
-- [3.1]{.pnum} The last element of `Rs...` models and satisfies `bidirectional_range`,
-- [3.2]{.pnum} And, all except the last element of `Rs...` model and satisfy `@_constant-time-reversible_@`.
+- [3.1]{.pnum} The last element of `Rs...` models `bidirectional_range`,
+- [3.2]{.pnum} And, all except the last element of `Rs...` model `@_constant-time-reversible_@`.
 
 :::