The Grey's Anatomy spin-off still doesn't have an official title, but fans are already wondering how often they'll see their favorite Grey Sloane Memorial doctors crossing over to the firehouse and vice versa.

Outside of the pilot, which will launch in March and features some prominent Grey's cameos, the executive producers of the series are open to having the two shows intersect as often as the opportunities present themselves.

"We exist in the same universe. The show is Grey's Anatomy adjacent," executive producer Stacy McKee told reporters during the spin-off panel at the Television Critics Association winter previews on Monday. "The world takes place in Seattle the same place that Grey's does, so there's a lot of potential for cross-pollination. We hope that comes to fruition."

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Both shows are set in Seattle and film in Los Angeles, which should make it fairly easy to get characters to bounce back and forth, even for an episode or two. The spin-off's lead character, Ben Warren (Jason George), is still married to the Chief of Surgery at Grey Sloane Memorial Miranda Bailey (Chandra Wilson), after all.

"It all depends," McKee said about the logistics and how often they'd go for the crossover. "The great thing about it is that we exist in the same universe so there's definitely great potential to have people or things work their way in and we are excited about all of those possibilities."

The question is: who most do you want to see going to hang out at the firehouse?

The Grey's Anatomy spin-off premieres Thursday, March 22 at 9/8c on ABC.