Yes I’ve heard of it too. It occurs once a person attains the Mystical Marriage. God essentially swoops in and takes over. It’s funny because the saints who’ve experienced it note that they would be in contemplation for hours without noticing that any time had passed at all.
St. Theresa of Avila once commented that she once began meditating on the words “Our Father…” and by the time she came to, what she thought had been only 45 minutes was actually 4 hours.
Yes, exactly. Such prayer has been called, “the prelude to the Beatific Vision”. Such insights of the saints, in their mystical union with God the Holy Trinity, can give us insights into the “new heavens and the new earth” that await mankind after the battle and constraints of this earthly life are completed.