Hey apnzz,
Quick question since I saw you got your NVC received date today. I have the same NOA2 and Sent to DOS dates as you (Aug 23, Oct 7).
Where did you get the notification? Was it sent to the petitioner or beneficiary email? And did you at any point contact the NVC to inquire about your case (after "sent to DOS" notifcation)?
Also, congrats on an NVC update (finally)