https://www.youtube.com/watch?v=-M0HaPuQgjo
The Quantum_Leap take on time travel is that Sam's consciousness is temporarily overlapping someone in the past. Its a little like if a car valet gets you to move over so that they can drive while you have a nap.
It could be likened to a benevolent form of body Carjacking. https://julianorth.co/blog/2020/02/walk-ins-why-some-souls-choose-to-hand-over-the-wheel The Walk-in_(concept) seems a little creepy as it might be a benenevolent form of temporary body possesion. https://medium.com/journal-kita/are-you-a-walk-in-soul-d89e26a8d440
https://en.wikipedia.org/wiki/Quantum_Leap_(1989_TV_series)#Development
Unsolved Mysteries Of Quantum Leap With Donald P. Bellisario | Unsolved Mysteries | Ars Technica https://www.youtube.com/watch?v=764KR3TVMgs
https://en.wikipedia.org/wiki/Quantum_Leap_(1989_TV_series)#Final_episode
In the 2001 movie Donnie_Darko, the protagonist ends up in another timeline, or an alteration of his own timeline. In either case, a girl who knew DD no longer knows who he is, but he is still in the same body. https://en.wikipedia.org/wiki/Donnie_Darko#Plot
However, in the 2011 movie Source_Code the protagonist, who was severely injured, is apparently forced into a secret military quantum time travel program. He becomes a temporary walk-in to try to figure out what happened on a train in Chicago. After repeated attempts, he starts to realize that alternate timelines might be involved. Just before his last leap, he makes a phone call to his father, who was played by Scott_Bakula. Then on his last leap, he is able to fully merge into another timeline and live in a new body. The female protagonist likes his new innerself. https://en.wikipedia.org/wiki/Source_Code#Plot
