User blog comment:Xandermcc/Potential crossovers coming soon (SPECULATION)/@comment-3127448-20180215224452

I feel like the crossover will happen on Supergirl. They'll finish their season later than everyone else, giving others the chance to crossover to SG's earth without conflicting filming schedules.

It would be great for E1 residents to visit E38. Only Barry and Cisco have and even then Cisco only saw Kara's apartment.