Twilio TwiML sequential call forwarding | Fwd to multiple numbers in order with a "press 1 to accept option". If no answer then returns call to Studio flow

forward_to_first_number.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--This is the first bin to get triggered from the Studio flow-->

<Response>
  <Dial timeout="12" action="forward_to_second_number.xml">
    <Number url="whisper_instructions.xml">+13105559999 
    </Number>
  </Dial>
</Response>

forward_to_second_number.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--forward_to_second_number.xml-->

<Response>
    <Dial timeout="12" action="forward_to_third_number.xml">
      <Number url="whisper_instructions.xml">+13105558888
      </Number>
    </Dial>
</Response>

forward_to_third_number.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--forward_to_third_number.xml-->

<Response>
    <Dial timeout="12" action="return_to_studio.xml">
      <Number url="whisper_instructions.xml">+13105557777
      </Number>
    </Dial>
</Response>

return_to_studio.xml

<?xml version="1.0" encoding="UTF-8"?>
<Response>				  
  <Redirect>https://webhooks.twilio.com/v1/Accounts/xx**acctSID**xx/Flows/xx**FlowSID**xx?FlowEvent=return&amp;callFwd=noAnswer</Redirect>
</Response>

success_connection.xml

<?xml version="1.0" encoding="UTF-8"?>
<Response>
  <Say>
  	Thank you. We're connecting your call now. 
  </Say>
</Response>

whisper_instructions.xml

<?xml version="1.0" encoding="UTF-8"?>
<Response>
    <Gather timeout="5" numDigits="1" action="success_connection.xml">
        <Say>
            You have an incoming call from your company. Press 1 to accept.
        </Say>
    </Gather>
</Response>