The author had added a correction to the post (12th August 2020) stating that this was a mistake, and that the actual procedure was much less cumbersome:
https://web.archive.org/web/20200812093618/https://superr.in...
> It has been bought to my attention that there was a mistake by an entry level employee.
> So the Revenue Department itself was supposed to get all the NOCs required by going to all those offices, but an entry level employee forgot to add my file to the list of NA’s to be done.
> [...] But PLEASE UNDERSTAND that “it was a mistake” in filing by an Entry Level Employee and normally this procedure takes less than 2 months and all the heavy lifting is done by the Revenue Department, Collector Office.
Tweet from the author about the correction: https://twitter.com/mrohanshah/status/1293170591441104902
But the correction was removed after a while, so maybe a bit of clarification will help.