Yes. It's deliberately taking the hardest route to do something that should actually be a no brainer.
Marvel Cinematic Universe (IM, Thor, Cap, Ant-Man, Guardians), Marvel Network shows (Agents of Shield, Agent Carter), Marvel XD cartoons (Spider Man, Hulk, Avengers, Guardians), Marvel Netflix shows (Daredevil, Jessica Jones). Different staffs, different media, different distribution formats...
ONE UNIVERSE. Period. If Jessica Jones wants to play tourist at the Avengers tower she doesn't have to conquer the speed force and run through dimensions. She can get on the freakin' subway to Manhattan.
It's stupid if this is CBS trying to keep the "Super" brand exclusive to CBS because it's already not exclusive to CBS. Building some super mentions into the CW shows would have laid the groundwork nicely for this crossover and allowed more characters to participate...and Barry could freakin' just run to National City. And Kara could easily fly to star or Central Cities. And Cat could kill herself trying to unmask the Green Arrow. why the hell not?
Nope. Gotta do the preTVCrisis Earth one Earth two BS.
Stupid.