Supernatural‘s Winchester family reunion might have broken the fabric of reality, but it fixed the long-running inconsistency caused by casting Jeffrey Dean Morgan as John Winchester. Supernatural season 14’s “Lebanon” marked the show’s 300th episode, and that milestone was celebrated in style via the return of Jeffrey Dean Morgan as Sam & Dean’s father. Happening across some wish-granting relic, the Winchester brothers’ deepest desire to see their late father again became a reality, and John was parachuted into the Supernatural bunker.

https://screenrant.com/supernatural-winchester-family-reunion-jeffrey-dean-morgan-age-factoid/