A.j. Flowers said this quote

While his body was left behind, his soul soared into the heavens. He did not pause at Celestia’s gates. No, that was not the true Celestial realm. Even as it floated among the skies and hosted its angelic ward, it was nothing more than a city. The place the Hallowed sought was beyond such petty creatures. He did not give it another passing glance as he ascended.