Barry, Cisco and Kara meet up once a month to explore a new earth. When team Arrow and the Legends found out they mutually decided that all four teams should be represented. Team Arrow sent Dinah and the Legends sent Nate and Ray
Someone please write the au where Barry and Nate used to be conspiracy theory friends (except their conspiracy theories were actually right), investigating Barry’s mom’s murder and Nate’s Justice Society grandfather and history changes.
The irony is, they’re both after the same guy, Thawne, but they don’t know it. (Wells probably got a kick out of spying on them)