Address @AngeloKai's comments about lifetimeTimer

index.bs

@@ -591,9 +591,9 @@ When this method is invoked, the user agent MUST execute the following algorithm
     member of <code>|options|.{{MakePublicKeyCredentialOptions/user}}</code> are [=present|not present=], return a {{TypeError}} [=simple exception=].
 
 1. If the {{MakePublicKeyCredentialOptions/timeout}} member of |options| is [=present=], check if its value lies within a
-    reasonable range as defined by the platform and if not, correct it to the closest value lying within that range. Set
-    |adjustedTimeout| to this adjusted value. If the {{MakePublicKeyCredentialOptions/timeout}} member of |options| is [=present|not
-    present=], then set |adjustedTimeout| to a platform-specific default.
+    reasonable range as defined by the platform and if not, correct it to the closest value lying within that range. Set a timer
+    |lifetimeTimer| to this adjusted value. If the {{MakePublicKeyCredentialOptions/timeout}} member of |options| is [=present|not
+    present=], then set |lifetimeTimer| to a platform-specific default.
 
 1. Let |global| be the {{PublicKeyCredential}}'s [=interface object=]'s [=global object|environment settings object's global
     object=].
@@ -682,7 +682,7 @@ When this method is invoked, the user agent MUST execute the following algorithm
 
 1. Let |clientDataHash| be the [=hash of the serialized client data=] represented by |clientDataJSON|.
 
-1. Let |lifetimeTimer| be a timer for |adjustedTimeout| milliseconds.
+1. Start |lifetimeTimer|.
 
 1. Let |issuedRequests| be a new [=ordered set=].
 
@@ -832,8 +832,8 @@ method is invoked, the user agent MUST:
 
 1. If the {{PublicKeyCredentialRequestOptions/timeout}} member of |options| is [=present=], check if its value lies
     within a reasonable range as defined by the platform and if not, correct it to the closest value lying within that range.
-    Set |adjustedTimeout| to this adjusted value. If the {{PublicKeyCredentialRequestOptions/timeout}} member of
-    |options| is [=present|not present=], then set |adjustedTimeout| to a platform-specific default.
+    Set a timer |lifetimeTimer| to this adjusted value. If the {{PublicKeyCredentialRequestOptions/timeout}} member of
+    |options| is [=present|not present=], then set |lifetimeTimer| to a platform-specific default.
 
 1. Let |global| be the {{PublicKeyCredential}}'s [=interface object=]'s [=relevant global object=].
 
@@ -904,7 +904,7 @@ method is invoked, the user agent MUST:
 
 1. Let |authenticator| be a platform-specific handle whose value identifies an [=authenticator=].
 
-1. Let |lifetimeTimer| be a timer for |adjustedTimeout| milliseconds.
+1. Start |lifetimeTimer|.
 
 1. [=set/For each=] |authenticator| that becomes available on this platform during the lifetime of
     |lifetimeTimer|, perform the following steps: