How the heck am I supposed to know? [Leo spreads out his hands in a "what can you do?" sort of expression.] We don't even know how to get back to our own worlds yet.
[And sure, if there's some way to do that, it may be possible to time travel too, but it's not like Leo knows for sure.]
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[And sure, if there's some way to do that, it may be possible to time travel too, but it's not like Leo knows for sure.]