rephrase and add bc message

source

@@ -95875,12 +95875,10 @@ interface <dfn interface>NotRestoredReasons</dfn> {
    <code>BroadcastChannel</code> connection was shut down, so the page was not in a state that
    could be stored in the <a href="#note-bfcache">back/forward cache</a>.</dd>
 
-   <dt>"<dfn data-x="blocking-frame-navigating" export><code>frame-navigating</code></dfn>"</dt>
-   <dd>The <code>Document</code> had <span>descendant navigables</span> whose <span
-   data-x="nav-document">active document</span>'s <span
-   data-x="concept-document-origin">origin</span> is not <span>same origin</span> with
-   <span>top-level traversable</span> and was still loading while the <code>Document</code>
-   was being <span data-x="unload a document">unloaded</span>.</dd>
+   <dt>"<dfn data-x="blocking-broadcastchannel-message" export><code>broadcastchannel-message</code></dfn>"</dt>
+   <dd>While the page was stored in <a href="#note-bfcache">back/forward cache</a>, a
+   <code>BroadcastChannel</code> connection on the page received a message and <code
+   data-x="event-message">message</code> event was fired.</dd>
 
    <dt>"<dfn data-x="blocking-idb-event" export><code>idbversionchangeevent</code></dfn>"</dt>
    <dd>The <code>Document</code> had a pending <code>IDBVersionChangeEvent</code> while
@@ -95910,7 +95908,7 @@ interface <dfn interface>NotRestoredReasons</dfn> {
 
    <dt>"<dfn data-x="blocking-navigating" export><code>navigating</code></dfn>"</dt>
    <dd>While <span data-x="unload a document">unloading</span>, loading was still ongoing, and so
-   the <code>Document</code> was not in a stable state that could be stored in <a
+   the <code>Document</code> was not in a state that could be stored in <a
    href="#note-bfcache">back/forward cache</a>.</dd>
 
    <dt>"<dfn data-x="blocking-navigation-canceled" export><code>navigation-canceled</code></dfn>"</dt>
@@ -95931,14 +95929,14 @@ interface <dfn interface>NotRestoredReasons</dfn> {
    <span>top-level browsing context</span>.</dd>
 
    <dt>"<dfn data-x="blocking-otp" export><code>otpcredential</code></dfn>"</dt>
-   <dd>The <code>Document</code> had <code>OTPCredential</code> before <span
+   <dd>The <code>Document</code> created an <code>OTPCredential</code> before <span
    data-x="unload a document">unloading</span>.</dd>
 
    <dt>"<dfn
    data-x="blocking-outstanding-network-request" export>
    <code>outstanding-network-request</code></dfn>"</dt>
    <dd>While <span data-x="unload a document">unloading</span>, the <code>Document</code> had
-   outstanding network requests and was not in a stable state that could be stored in <a
+   outstanding network requests and was not in a state that could be stored in <a
    href="#note-bfcache">back/forward cache</a>.</dd>
 
    <dt>"<dfn data-x="blocking-payment" export><code>paymentrequest</code></dfn>"</dt>