diff --git a/sdk/servicebus/service-bus/test/stress/scenarioBatchReceive.ts b/sdk/servicebus/service-bus/test/stress/scenarioBatchReceive.ts
index b435f4d87a8..58ed07de0dd 100644
--- a/sdk/servicebus/service-bus/test/stress/scenarioBatchReceive.ts
+++ b/sdk/servicebus/service-bus/test/stress/scenarioBatchReceive.ts
@@ -19,14 +19,19 @@ interface ScenarioReceiveBatchOptions {
   numberOfMessagesPerSend?: number;
   delayBetweenSendsInMs?: number;
   totalNumberOfMessagesToSend?: number;
+  /**
+   * If set to true, `totalNumberOfMessagesToSend` number of messages will be sent before triggering receive.
+   */
+  sendAllMessagesBeforeReceiveStarts?: boolean;
+  numberOfParallelSends?: number;
   maxAutoLockRenewalDurationInMs?: number;
   settleMessageOnReceive: boolean;
 }
 
 function sanitizeOptions(args: string[]): Required<ScenarioReceiveBatchOptions> {
   const options = parsedArgs<ScenarioReceiveBatchOptions>(args, {
-    boolean: ["settleMessageOnReceive"],
-    default: { settleMessageOnReceive: false }
+    boolean: ["settleMessageOnReceive", "sendAllMessagesBeforeReceiveStarts"],
+    default: { settleMessageOnReceive: false, sendAllMessagesBeforeReceiveStarts: false }
   });
   return {
     testDurationInMs: options.testDurationInMs || 60 * 60 * 1000, // Default = 60 minutes
@@ -37,14 +42,16 @@ function sanitizeOptions(args: string[]): Required<ScenarioReceiveBatchOptions>
     numberOfMessagesPerSend: options.numberOfMessagesPerSend || 1,
     delayBetweenSendsInMs: options.delayBetweenSendsInMs || 0,
     totalNumberOfMessagesToSend: options.totalNumberOfMessagesToSend || Infinity,
+    sendAllMessagesBeforeReceiveStarts: options.sendAllMessagesBeforeReceiveStarts,
     maxAutoLockRenewalDurationInMs: options.maxAutoLockRenewalDurationInMs || 0, // 0 = disabled
-    settleMessageOnReceive: options.settleMessageOnReceive
+    settleMessageOnReceive: options.settleMessageOnReceive,
+    numberOfParallelSends: options.numberOfParallelSends || 5
   };
 }
 
 export async function scenarioReceiveBatch() {
   const testOptions = sanitizeOptions(process.argv);
-  const {
+  let {
     testDurationInMs,
     receiveMode,
     receiveBatchMaxMessageCount,
@@ -54,7 +61,9 @@ export async function scenarioReceiveBatch() {
     delayBetweenSendsInMs,
     totalNumberOfMessagesToSend,
     maxAutoLockRenewalDurationInMs,
-    settleMessageOnReceive
+    settleMessageOnReceive,
+    sendAllMessagesBeforeReceiveStarts,
+    numberOfParallelSends
   } = testOptions;
 
   // Sending stops after 70% of total duration to give the receiver a chance to clean up and receive all the messages
@@ -86,7 +95,10 @@ export async function scenarioReceiveBatch() {
       elapsedTime < testDurationForSendInMs &&
       stressBase.messagesSent.length < totalNumberOfMessagesToSend
     ) {
-      await stressBase.sendMessages([sender], numberOfMessagesPerSend);
+      await stressBase.sendMessages(
+        new Array(numberOfParallelSends).fill(sender),
+        numberOfMessagesPerSend
+      );
       elapsedTime = new Date().valueOf() - startedAt.valueOf();
       await delay(delayBetweenSendsInMs);
     }
@@ -106,7 +118,12 @@ export async function scenarioReceiveBatch() {
     }
   }
 
-  await Promise.all([sendMessages(), receiveMessages()]);
+  if (sendAllMessagesBeforeReceiveStarts) {
+    await sendMessages();
+  }
+  await Promise.all(
+    (!sendAllMessagesBeforeReceiveStarts ? [sendMessages()] : []).concat(receiveMessages())
+  );
   await sbClient.close();
 
   await stressBase.end();
diff --git a/sdk/servicebus/service-bus/test/stress/scenarioCloseOpen.ts b/sdk/servicebus/service-bus/test/stress/scenarioCloseOpen.ts
index 1ad9b1c9120..f6bb9a1bfd2 100644
--- a/sdk/servicebus/service-bus/test/stress/scenarioCloseOpen.ts
+++ b/sdk/servicebus/service-bus/test/stress/scenarioCloseOpen.ts
@@ -25,7 +25,7 @@ function sanitizeOptions(args: string[]): Required<ScenarioCloseOptions> {
     default: { shouldCreateNewClientEachTime: true }
   });
   return {
-    testDurationInMs: options.testDurationInMs || 60 * 1000, // Default = 60 minutes
+    testDurationInMs: options.testDurationInMs || 60 * 60 * 1000, // Default = 60 minutes
     receiveBatchMaxMessageCount: options.receiveBatchMaxMessageCount || 10,
     receiveBatchMaxWaitTimeInMs: options.receiveBatchMaxWaitTimeInMs || 10000,
     numberOfMessagesPerSend: options.numberOfMessagesPerSend || 1,
diff --git a/sdk/servicebus/service-bus/test/stress/stressTestsBase.ts b/sdk/servicebus/service-bus/test/stress/stressTestsBase.ts
index a1bc8f58690..7db914c6c90 100644
--- a/sdk/servicebus/service-bus/test/stress/stressTestsBase.ts
+++ b/sdk/servicebus/service-bus/test/stress/stressTestsBase.ts
@@ -80,13 +80,13 @@ export class SBStressTestsBase {
     options?: CreateQueueOptions | undefined,
     testOptions?: Record<string, string | number | boolean>
   ) {
+    this.queueName =
+      (!queueNamePrefix ? `queue` : queueNamePrefix) + `-${Math.ceil(Math.random() * 100000)}`;
     this.reportFileName = `temp/report-${this.queueName}.txt`;
     this.errorsFileName = `temp/errors-${this.queueName}.txt`;
     this.messagesReportFileName = `temp/messages-${this.queueName}.json`;
     if (testOptions) console.log(testOptions);
     await appendFile(this.reportFileName, JSON.stringify(testOptions, null, 2));
-    this.queueName =
-      (!queueNamePrefix ? `queue` : queueNamePrefix) + `-${Math.ceil(Math.random() * 100000)}`;
     await this.serviceBusAdministrationClient.createQueue(this.queueName, options);
   }
 
diff --git a/sdk/servicebus/service-bus/test/stress/utils.ts b/sdk/servicebus/service-bus/test/stress/utils.ts
index 8db78077e9d..1f543d08bfe 100644
--- a/sdk/servicebus/service-bus/test/stress/utils.ts
+++ b/sdk/servicebus/service-bus/test/stress/utils.ts
@@ -67,7 +67,9 @@ export async function saveDiscrepanciesFromTrackedMessages(
   const output = {
     messages_sent_but_never_received: [],
     messages_not_sent_but_received: [],
-    messages_sent_multiple_times: []
+    messages_sent_multiple_times: [],
+    messages_sent_once_but_received_multiple_times: [],
+    messages_sent_once_and_received_once: []
   };
   for (const id in trackedMessageIds) {
     if (trackedMessageIds[id].sentCount <= 0) {
@@ -82,6 +84,14 @@ export async function saveDiscrepanciesFromTrackedMessages(
       // Message was sent multiple times
       output.messages_sent_multiple_times.push(id);
     }
+    if (trackedMessageIds[id].sentCount === 1 && trackedMessageIds[id].receivedCount > 1) {
+      // Message was sent once but received multiple times
+      output.messages_sent_once_but_received_multiple_times.push(id);
+    }
+    if (trackedMessageIds[id].sentCount === 1 && trackedMessageIds[id].receivedCount === 1) {
+      // Message was sent once and received once
+      output.messages_sent_once_and_received_once.push(id);
+    }
   }
 
   await writeFile(fileName, JSON.stringify(output));