SPOILER ALERT: This interview reveals major plot points from the “9-1-1” Season 6 finale, which aired Monday on Fox.

Buck (Oliver Stark) helped bring a very special baby boy into the world on the sixth season finale of “9-1-1.” The little guy, whom Buck donated sperm to help his friends conceive, was born on Buck’s new couch (if you know, you know) — with Buck delivering the infant during one of the most large-scale disasters “9-1-1” fans have ever seen.

“9-1-1” is moving to ABC for its seventh season, meaning, unfortunately, that any future crossovers in the franchise are “extremely unlikely,” according to Fox boss Michael Thorn. For