This verse from Ramana should eliminate all confusion, all doubts.
I have explained this in great detail elsewhere
He basically describes the Sohum or Hangso method that Yogananda describes
If you can do it successfully realization is in a short time and in first day there is the highest manifestation.
However , this simple technique is very hard to perform. Why? Your desires. Your body will bring you down to this unfortunate living in this world
In some ways ramana maharshi deceived the masses by telling them to use the method of inquiry. To a few very fortunate disciple he told them the hungso technique
Even if you look up the technique or even read about it and what Yogananda said, you will need an accomplished person to explain a few secret details