diff --git a/packages/realm/src/ProgressRealmPromise.ts b/packages/realm/src/ProgressRealmPromise.ts
index e3e5db1120..fad2a9c207 100644
--- a/packages/realm/src/ProgressRealmPromise.ts
+++ b/packages/realm/src/ProgressRealmPromise.ts
@@ -38,10 +38,20 @@ type OpenBehavior = {
   timeOutBehavior?: OpenRealmTimeOutBehavior;
 };
 
+const defaultLocalOpenRealmConfiguration = {
+  openBehavior: OpenRealmBehaviorType.OpenImmediately,
+};
+
+const defaultSyncOpenRealmConfiguration = {
+  openBehavior: OpenRealmBehaviorType.DownloadBeforeOpen,
+  timeOut: 30 * 1000,
+  timeOutBehavior: OpenRealmTimeOutBehavior.ThrowException,
+};
+
 function determineBehavior(config: Configuration, realmExists: boolean): OpenBehavior {
   const { sync, openSyncedRealmLocally } = config;
   if (!sync || openSyncedRealmLocally) {
-    return { openBehavior: Realm.App.Sync.defaultLocalOpenRealmConfiguration.type };
+    return defaultLocalOpenRealmConfiguration;
   } else {
     const configProperty = realmExists ? "existingRealmFileBehavior" : "newRealmFileBehavior";
     const configBehavior = sync[configProperty];
@@ -52,8 +62,7 @@ function determineBehavior(config: Configuration, realmExists: boolean): OpenBeh
       }
       return { openBehavior: type, timeOut, timeOutBehavior };
     } else {
-      const { type, timeOut, timeOutBehavior } = Realm.App.Sync.defaultSyncOpenRealmConfiguration;
-      return { openBehavior: type, timeOut, timeOutBehavior };
+      return defaultSyncOpenRealmConfiguration;
     }
   }
 }
diff --git a/packages/realm/src/app-services/Sync.ts b/packages/realm/src/app-services/Sync.ts
index 24a5b6fb57..4106373357 100644
--- a/packages/realm/src/app-services/Sync.ts
+++ b/packages/realm/src/app-services/Sync.ts
@@ -23,7 +23,6 @@ import {
   Logger,
   MutableSubscriptionSet,
   NumericLogLevel,
-  OpenRealmBehaviorConfiguration,
   OpenRealmBehaviorType,
   OpenRealmTimeOutBehavior,
   PartitionValue,
@@ -172,33 +171,21 @@ export class Sync {
   }
 
   /**
-   * The default OpenRealmBehaviorConfiguration used for local realms.
-   * This is used if the behavior is not specified by the developer when opening the realm.
-   * @internal
+   * The default behavior settings if you want to open a synchronized Realm immediately and start working on it.
+   * If this is the first time you open the Realm, it will be empty while the server data is being downloaded in the background.
+   * @deprecated since v12
    */
-  static defaultLocalOpenRealmConfiguration: Readonly<OpenRealmBehaviorConfiguration> = {
+  static openLocalRealmBehavior = {
     type: OpenRealmBehaviorType.OpenImmediately,
   };
 
   /**
-   * The default OpenRealmBehaviorConfiguration used for synced realms.
-   * This is used if the behavior is not specified by the developer when opening the realm.
-   * @internal
+   * The default behavior settings if you want to wait for downloading a synchronized Realm to complete before opening it.
+   * @deprecated since v12
    */
-  static defaultSyncOpenRealmConfiguration: Readonly<OpenRealmBehaviorConfiguration> = {
+  static downloadBeforeOpenBehavior = {
     type: OpenRealmBehaviorType.DownloadBeforeOpen,
     timeOut: 30 * 1000,
     timeOutBehavior: OpenRealmTimeOutBehavior.ThrowException,
   };
-
-  /**
-   * The default behavior settings if you want to open a synchronized Realm immediately and start working on it.
-   * If this is the first time you open the Realm, it will be empty while the server data is being downloaded in the background.
-   */
-  static openLocalRealmBehavior = Sync.defaultLocalOpenRealmConfiguration;
-
-  /**
-   * The default behavior settings if you want to wait for downloading a synchronized Realm to complete before opening it.
-   */
-  static downloadBeforeOpenBehavior = Sync.defaultSyncOpenRealmConfiguration;
 }
diff --git a/packages/realm/src/app-services/SyncConfiguration.ts b/packages/realm/src/app-services/SyncConfiguration.ts
index 36a507f153..3d9dfb98f6 100644
--- a/packages/realm/src/app-services/SyncConfiguration.ts
+++ b/packages/realm/src/app-services/SyncConfiguration.ts
@@ -208,11 +208,27 @@ export type BaseSyncConfiguration = {
   user: AnyUser;
   /**
    * Whether to create a new file and sync in background or wait for the file to be synced.
+   * The default behavior is:
+   *```
+   * {
+   *   type: OpenRealmBehaviorType.DownloadBeforeOpen,
+   *   timeOut: 30 * 1000,
+   *   timeOutBehavior: OpenRealmTimeOutBehavior.ThrowException,
+   * }
+   * ```
    */
   newRealmFileBehavior?: OpenRealmBehaviorConfiguration;
   /**
    * Whether to open existing file and sync in background or wait for the sync of the file to complete and then open.
    * If not set, the Realm will be downloaded before opened.
+   * The default behavior is:
+   *```
+   * {
+   *   type: OpenRealmBehaviorType.DownloadBeforeOpen,
+   *   timeOut: 30 * 1000,
+   *   timeOutBehavior: OpenRealmTimeOutBehavior.ThrowException,
+   * }
+   * ```
    */
   existingRealmFileBehavior?: OpenRealmBehaviorConfiguration;
   /**