Does Apple's Speech framework support speech recognition to work in the background of the App?

I wrote a class for speech recognition with the Speech framework.

   // Cancel the previous task if it's running.
   if (self.recognitionTask) {
       //[self.recognitionTask cancel]; // Will cause the system error and memory problems.
       [self.recognitionTask finish];
   }
   self.recognitionTask = nil;

   // Configure the audio session for the app.
   NSError *error = nil;
   [AVAudioSession.sharedInstance setCategory:AVAudioSessionCategoryRecord withOptions:AVAudioSessionCategoryOptionDuckOthers error:&error];
   if (error)
   {
       [self stopWithError:error];
       return;
   }
   [AVAudioSession.sharedInstance setActive:YES withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:&error];
   if (error)
   {
       [self stopWithError:error];
       return;
   }

   // Create and configure the speech recognition request.
   self.recognitionRequest = [[SFSpeechAudioBufferRecognitionRequest alloc] init];
   self.recognitionRequest.taskHint = SFSpeechRecognitionTaskHintConfirmation;
   
   // Keep speech recognition data on device
   if (@available(iOS 13, *)) {
       self.recognitionRequest.requiresOnDeviceRecognition = NO;
   }

   // Create a recognition task for the speech recognition session.
   // Keep a reference to the task so that it can be canceled.
   __weak typeof(self)weakSelf = self;
   self.recognitionTask = [self.speechRecognizer recognitionTaskWithRequest:self.recognitionRequest resultHandler:^(SFSpeechRecognitionResult * _Nullable result, NSError * _Nullable error) {
      // ...
       if (error != nil || result.final)
       {
                       
       }
   }];

I want to know if the Speech framework supports background tasks. If support, how do I modify the iOS code?