diff --git a/core/src/main/java/com/google/adk/models/GeminiLlmConnection.java b/core/src/main/java/com/google/adk/models/GeminiLlmConnection.java
index 1f3d0b8c5..35dadd9fd 100644
--- a/core/src/main/java/com/google/adk/models/GeminiLlmConnection.java
+++ b/core/src/main/java/com/google/adk/models/GeminiLlmConnection.java
@@ -24,7 +24,6 @@
 import com.google.genai.types.Blob;
 import com.google.genai.types.Content;
 import com.google.genai.types.FinishReason;
-import com.google.genai.types.FunctionCall;
 import com.google.genai.types.FunctionResponse;
 import com.google.genai.types.LiveConnectConfig;
 import com.google.genai.types.LiveSendClientContentParameters;
@@ -202,14 +201,15 @@ private static LlmResponse createToolCallResponse(LiveServerToolCall toolCall) {
     toolCall
         .functionCalls()
         .ifPresent(
-            calls -> {
-              for (FunctionCall call : calls) {
+            calls ->
                 builder.content(
                     Content.builder()
-                        .parts(ImmutableList.of(Part.builder().functionCall(call).build()))
-                        .build());
-              }
-            });
+                        .role("model")
+                        .parts(
+                            calls.stream()
+                                .map(call -> Part.builder().functionCall(call).build())
+                                .collect(toImmutableList()))
+                        .build()));
     return builder.partial(false).turnComplete(false).build();
   }
 
diff --git a/core/src/test/java/com/google/adk/models/GeminiLlmConnectionTest.java b/core/src/test/java/com/google/adk/models/GeminiLlmConnectionTest.java
index a3ac09fe5..b15a65852 100644
--- a/core/src/test/java/com/google/adk/models/GeminiLlmConnectionTest.java
+++ b/core/src/test/java/com/google/adk/models/GeminiLlmConnectionTest.java
@@ -19,6 +19,7 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
 import com.google.genai.types.Content;
 import com.google.genai.types.FunctionCall;
 import com.google.genai.types.GenerateContentResponseUsageMetadata;
@@ -164,6 +165,7 @@ public void convertToServerResponse_withToolCall_mapsContentWithFunctionCall() {
     testObserver.assertComplete();
     LlmResponse response = testObserver.values().get(0);
     assertThat(response.content()).isPresent();
+    assertThat(response.content().get().role()).hasValue("model");
     assertThat(response.content().get().parts()).isPresent();
     assertThat(response.content().get().parts().get()).hasSize(1);
     assertThat(response.content().get().parts().get().get(0).functionCall()).hasValue(functionCall);
@@ -171,6 +173,39 @@ public void convertToServerResponse_withToolCall_mapsContentWithFunctionCall() {
     assertThat(response.turnComplete()).hasValue(false);
   }
 
+  @Test
+  public void convertToServerResponse_withMultipleFunctionCalls_preservesAllCallsAsParts() {
+    // Regression test for parallel tool calling on the live/BIDI path: a single toolCall message
+    // can carry multiple FunctionCalls, and all of them must be preserved (not just the last).
+    FunctionCall getWeather =
+        FunctionCall.builder().name("getWeather").args(ImmutableMap.of("city", "Paris")).build();
+    FunctionCall getTime =
+        FunctionCall.builder()
+            .name("getTime")
+            .args(ImmutableMap.of("timezone", "Europe/London"))
+            .build();
+    LiveServerToolCall toolCall =
+        LiveServerToolCall.builder().functionCalls(ImmutableList.of(getWeather, getTime)).build();
+
+    LiveServerMessage message = LiveServerMessage.builder().toolCall(toolCall).build();
+
+    TestObserver<LlmResponse> testObserver = new TestObserver<>();
+
+    GeminiLlmConnection.convertToServerResponse(message).subscribe(testObserver);
+
+    testObserver.assertValueCount(1);
+    testObserver.assertComplete();
+    LlmResponse response = testObserver.values().get(0);
+    assertThat(response.content()).isPresent();
+    assertThat(response.content().get().role()).hasValue("model");
+    assertThat(response.content().get().parts()).isPresent();
+    assertThat(response.content().get().parts().get()).hasSize(2);
+    assertThat(response.content().get().parts().get().get(0).functionCall()).hasValue(getWeather);
+    assertThat(response.content().get().parts().get().get(1).functionCall()).hasValue(getTime);
+    assertThat(response.partial()).hasValue(false);
+    assertThat(response.turnComplete()).hasValue(false);
+  }
+
   @Test
   public void convertToServerResponse_withUsageMetadata_mapsGenerateResponseUsageMetadata() {
     LiveServerMessage message =