According to Osho, direct grace isn’t a stepping-stone but the flowering that occurs only at ultimate attainment, when the ego has completely disappeared. Until then, the ego blocks grace. Because attainment is the final state after which nothing remains to be reached, the descent of grace is coextensive with that irreversible completion—its effect is abiding, not transient.
Grace comes only after the ego is gone and you’ve already reached the final goal, and it lasts as that very state.