All these state owned mergers are creative accounting by govt to raise funds or debt from market.
When ONGC bought HPCL, it took loan from market to pay HPCL owner (govt). These loan is now on books of ONGC and not on Budget books of govt anymore.
In PFC’s case they already took loan from market and transferred money to govt for RECL shares. I would expect RBI to give approval soon if it’s troublesome.
Edit: one could ask, what’s problem in this? Answer is govt companies as well as govt is taking in too much debt from market which leaves very little for other private companies. With private pension and insurance companies growing in India, there is demand for ‘secure’ govt bonds. Now interest rates for prvt firms doesn’t go down even though RBI is cutting rates frequently as there is no money.