Is there a time-traveling portal under Black Spire Outpost that sucks in and spits out Star Wars characters so parkgoers can run into both Din Djarin and Kylo Ren in the same day? No, but a lesser site would have put used that in a clickbait title.
However, there was a neat clarification about how the canon timeline works at Galaxy's Edge, which does determine when these events take place. While celebrating the Season of the Force event at Disney Parks, Lucasfilm's Matt Martin told io9, via Gizmodo, how the timeline works in the theme park. Martin explained:
"“Star Wars storytelling is [set] across so many eras. And we wanted to give people the opportunity to meet characters from some of those new things that are coming out that may not be within the original, intended timeline. So, what we do is we try and look at the area each character is in as that exists where they are. They’re visiting Batuu in the time that you know them from the series—or somewhere close to it—and you’re getting to meet them [then and] there. And Walt Disney Imagineering has a pretty good way of ensuring that those characters don’t intrude on each other. That way your immersion isn’t broken when you’re meeting Sabine in one place and walk off and meet Kylo elsewhere."Matt Martin
While it's not time traveling, per se, it's a neat idea that the characters determine the time period of Batuu. So, if you run Kylo Ren, you're in the sequel trilogy. If you bump into Sabine Wren, that could be Ahsoka, possibly Star Wars Rebels. And then there is Chewbacca, who, thanks to his age, is this time nexus of all timelines, encompassing movies, TV shows, books, and comics (I'm kidding. Sort of).
This is a neat idea because it does allow the park so much flexibility. As Gizmodo points out in their article, most parkgoers don't care about the canon timeline in the parks. They are there to enjoy a trip to Disney, take pictures, shop, and snag a ronto wrap. However, it also allows diehard fans who do love that sort of thing to have an explanation of how and why Galaxy's Edge functions the way it does. It's not just one timeline but many, which is a neat concept to me.
Jokes aside, keep in mind that next time you're doing some shopping at Black Spire Outpost and bump into different Star Wars characters from different eras, you're doing a bit of time-traveling in the process.