As the saying goes, where there's smoke, there's probably 12,000 Star Wars fan theories about whether the smoke is actually Indiana Jones taking a cigarette break. Entire legions of fans out there are trying to prove the existence of a Star Wars/Indiana Jones crossover.
To be fair, it's not just that they can't imagine a world where that's not the case. The films' directors are just as complicit. Multiple Star Wars movies are stuffed with Indiana Jones Easter eggs and vice versa. It's almost as if they want us to find the well-hidden, perfect clue that proves both franchises exist in the exact same universe – preferably our universe.
Not all fan theories are created equal, of course, but these are pretty intriguing.
When Han Solo is first freed from the carbonite in Return of the Jedi, he's blind, shivering, and seems to have no real idea where he is. According to one fan theory, that's because while he was frozen, Han hallucinated about being an adventurous archaeologist/professor.
As proof, the Indiana Jones Minute podcast pointed to some compelling evidence:
-The first fallen rock in Raiders of the Lost Ark's Peruvian temple looks exactly like Snaggletooth from the Mos Eisley Cantina in A New Hope.
-The Staff of Ra headpiece is “literally a disk-shaped falcon,” kind of like Han Solo's Millennium Falcon.
-Porkins from A New Hope reappears as Major Eaton in Raiders of the Lost Ark, possibly as a result of Han's guilt for abandoning the Rebels early in the battle against the Death Star.
During a pivotal scene in Raiders of the Lost Ark, astute viewers notice some of the hieroglyphs feature Star Wars characters, such as R2-D2, C-3PO, and Princess Leia. That's no accident.
We already know that Ewoks mistake C-3PO for a god in Return of the Jedi. Maybe at some point a few Star Wars characters made their way to Earth and similarly impressed the locals. It's not much of a stretch to see how advanced robots and Force-wielding magicians could seem like supernatural beings to prehistoric people.
Indiana Jones presumably occurs during the standard timeline of Earth's history. Similarly, E.T. is also set within the confines of normal history, just a few decades later. There are several reasons to believe that E.T. himself is actually from a planet in the Star Wars galaxy. In fact, we see a group of delegates in the senate during the prequel films that all but confirm that fact. By extension, Indiana Jones exists in the same universe as E.T., which is in the same universe as Star Wars. They're all one and the same.
Near the end of Solo, we're shown the inside of Dryden Vos's office. It's filled with all sorts of treasures and collectibles. Strangely, several of those collectibles are actually from Indiana Jones. There's the Holy Grail, the Sankara Stones, and even the idol from the first film. Could it be that somewhere along the way, Dryden Vos' ship crashes onto Earth and those items are scattered across the planet? They could already be powerful in the Star Wars universe, which would explain why Vos has been collecting them.