While appearing as a guest on Wrestling Observer Live on Wednesday, Rocky Romero explained the parameters of AEW and CMLL's new working relationship.

That relationship began with Mistico vs. Romero taking place on last Friday's episode of AEW Rampage. Romero said bringing CMLL and AEW together wasn't the easiest task at first, but it all went "really, really smooth without a hitch" for his match against Mistico.

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"I'm looking forward to seeing what happens between both companies," Romero said. "It seems like both companies are pretty willing to go ahead and take the next step forward. So whatever that means, I'm excited for."

Romero was asked how things will work given that AEW also works with CMLL's rival Lucha Libre AAA.

"The parameters are things like, you know, maybe no AAA talent on the same show as CMLL talent. Obviously not in the same matches as well," Romero said. "But yeah, I think I’m pretty much responsible for at least getting the conversation started and bringing the idea of CMLL working with AEW. And in this case, primarily Mistico. I think that over the last couple weeks, we’ve heard quite a bit that Tony Khan was a big fan of Mistico and having him was a big deal. So just to be able to open that door for CMLL, AEW, and New Japan to hopefully do some more work together next year, I'm stoked for it. I think it’s really, really cool. That’s another forbidden door opened."

Romero is the current NWA World Historic Welterweight Champion in CMLL. In addition to wrestling, he works behind the scenes for NJPW.

The match on Rampage last Friday was Mistico's AEW debut. After the match was filmed, CMLL issued a statement thanking AEW for the treatment they received. Tony Khan said it was an honor to host CMLL and he's excited about the two promotions working together.