How long uscis takes to send the noir after they receive the file from us embassy ?

Vi dec 2016. File sent to uscis from Delhi

Embassy June 19, 2017z

Since then no update, reached out to senate and they emailed uscis on 6jan 2018. Aced that uscis visited my employer on 18 Jan 2018.

No update after that. I am

In USA since 2006. Pursued my masters from Florida.

Below are my questions -

  1. what are the chances of getting noir ?

  2. after how many months uscis usually send noir ?

  3. can I get reaffirmed without getting noir ?