When CBS first announced its Supergirl series, DC Comics fans wondered if that series might ever feature a crossover with The CW's The Flash or Arrow. And although rumors ran rampant that such a crossover event might actually happen at some point, it now seems unlikely, possibly due to legal reasons.

In an interview with The Hollywood Reporter, Supergirl executive producer Andrew Kreisberg mentioned the unlikelihood of a crossover between Supergirl and The CW's DC shows.

"There's always those late nights, delirious, semi-high on pizza where you're like, 'You know what would be really cool? If ...,' " said Kreisberg. "But right now there is no legitimate actual plan to bring [The Flash's] Cisco [Carlos Valdes] onto Supergirl or to bring [Supergirl's] Winn [Jeremy Jordan] onto Legends [of Tomorrow]. First of all, we don't even know if we could, legally. And quite frankly, just making the Arrow-verse—which is what we call Legends, Flash and Arrow—work, and then making Supergirl work, it's enough of a challenge without having to add a fourth player."

This is, however, a change in position from previous statements about the possibility of a crossover episode with the DC series.

"Later in the afternoon at his other office on the Warner Bros. lot, Berlanti meets with fellow producer Ali Adler and Oscar-winning costume designer Colleen Atwood to go over looks for their upcoming revamp of Supergirl," reports Entertainment Weekly. "The show will follow 24-year-old Kara Zor-El, Superman's cousin, and with a twist that could melt fanboy brains, '[Supergirl executive producer Greg] Berlanti says it's possible this Supergirl could enter the worlds of Arrow and The Flash.' "

Adding fuel to the speculation of a crossover was a Variety cover that featured all three superheroes together.

However, recently Berlanti changed his tune, perhaps because of the legal reasons cited by Kreisberg. Berlanti stated during an event promoting the recent The Flash and Arrow crossover episodes that Supergirl wasn't in the equation for such an event because it just received a full-season order from CBS. However, the most likely reason probably has more to do with competing networks.

Whatever the reasoning behind the decision, it seems it's becoming more unlikely that Supergirl will ever set foot in Central City and that The Flash will stay far away from National City, at least on TV.

Supergirl airs on CBS on Monday nights. The Flash airs on The CW on Tuesdays, and Arrow airs on The CW on Wednesdays.

ⓒ 2021 TECHTIMES.com All rights reserved. Do not reproduce without permission.