https://www.giantfreakinrobot.com/ent/quantum-leaps-fate-has-been-decided.html
A TV series or movie can continue with or without an original character.
https://www.cbr.com/quantum-leap-reboot-scott-bakula-nbc/
At some point even if its a slim chance, SB could make a very brief voice or video appearance.
https://screenrant.com/quantum-leap-2022-scott-bakula-sam-beckett-return-need
However, this or any production can still reference past characters, even if they physically are no longer involved.
https://thedigitallabyrinth.blogspot.com/search?q=Quantum+Leap
