Yesterday afternoon, Arrow actor David Ramsey apparently paid a visit to the writers' room for The Flash...

...which currently seems to be housed in what looks like a hospital room.

That could raise questions of its own -- who's in the hospital and why? -- but all that curiosity is being overshadowed by Ramsey's implication that there's another Arrow/The Flash crossover coming up this season:

Made a visit to #theflash writers room.. Can only mean one thing.. #arrow&theflash A photo posted by David Ramsey (@davidpaulramsey) on Jan 4, 2016 at 3:35pm PST

The last crossover, which aired last month and featured episodes titled "Legends of Yesterday" and "Legends of Today," set up much of the story for DC's Legends of Tomorrow and served as a kind of introductory "movie" for Hawkgirl and Hawkman.

While last season saw a number of cameo appearances by Arrow characters on The Flash and vice versa, there was only one big "crossover" storyline. Then again, they didn't need to spend their crossover building up a spinoff. It's possible the writers had a "Flarrow" idea that just couldn't wait until next season.

(Maybe because there is at least one Arrow character who won't make it until next season, any story that would require that person has to happen now?)

From a strategic point of view, doing a second, large-scale Arrow/The Flash crossover would be an interesting move for The CW. The episodes are routinely among the season's highest-rated, a huge boon for the network since The Flash and Arrow are already among its top shows. It could be argued, though, that some of the ratings appeal of the crossover is that they're rare and unusual -- something that would be undermined if fans could start expecting more than one of them per year.

We reached out to both The CW and WB for comment and will update as soon as we hear back.

What do you think ComicBook.com readers? Do you want to see another Flash/Arrow crossover? Let us know in the comments below.