Thread:Love Robin/@comment-26120048-20170218201404/@comment-366087-20170219181850

Sure for Thawne.

The decision was made in a discussion with LucidPigeons back when Supergirl was still on CBS when the first crossover was announced. We revisited that decision once she was moved to the CW. Nothing about how her show was treated on the CW changed the decision. "Arrowverse" was still the easy continuity where characters could walk, run, or drive to each other's cities. Earth-2 was included because the Earth-2 arc was 1) intrinsic to the Flash Arrowverse, and 2) did not have a astandalone show of its own to further muddy the distinction. Earth-2 only existed—could only be seen—through the Arrowverse.

Now, interestingly, IF the showrunners wish to meld Supergirl into the Arrowverse, they have a way to do so. Legends of Tomorrow not only deals with continuity-changing aberrations to the Arrowverse timeline BUT is currently running an arc with the Spear of Destiny. Which is a McGuffin which alter Reality.

So IF they want to fold Supergirl into the Arrowverse, all the means to do so is right there. All they'd need is a LoT/Supergirl crossover to make it happen, although for something that momentous if *I* were on the creative team(s), *I'd* make it another all-shows crossover event. Maybe even spin-off another show while doing so. Like Superman. Or Metropolis Police centering on Alex's girlfriend. Or even Guardian.