Legends of Tomorrow (2016)

Left Behind - S1-E9

Factual error: Ray, Sara, and Kendra are Left Behind in 1958. However, 10 weeks later Sara and Kendra are playing the board game "The Game of Life." The modern version, as seen, didn't come out until 1960 (previously it was called The Checkered Game of Life and doesn't resemble the modern version).

Bishop73

Jefferson 'Jax' Jackson: Is there anything you think about other than yourself?
Leonard Snart: Yes. Money.

Show generally

Question: Not sure if there's an answer, just speculation, or a plot hole. As I understand it, the premise of time travel in the show is the Legends can't go back to a time they've already been to because then time would fold in on itself, etc. For example, the 3 get stranded in 1958, picked up in 1960, but the rest of the Legends can't try again by just going back to 1958. But then it's revealed that Chronos was Rory all along, so how is Chronos/Rory able to time travel back to a time Rory has already been to without doing any real damage to time? And if the idea is, well no-one knew Chronos was Rory, so they didn't know they were interacting with a time traveling version of themselves (or what ever the reason), then all the Legends have to do is disguise themselves to interact in the same time.

Bishop73