However, airing on two different networks doesn't necessarily mean the shows won't crossover.
The Flash and Arrow are already set to crossover with each show's episode 8, and at one time Nightwing was rumored for Arrow.
"What you’ll see embedded in Flash and Arrow is that we’ll have the ability to test characters out. Is there room to grow them into the next show? I cannot tell you yet. There are discussions going on,” he said, reports AdWeek.com.
The Titans series has been described as centering around Dick Grayson who emerges from the shadow of Batman to become Nightwing to lead a fearless band of new super heroes including Starfire, Raven and many others.
Steve McQueen was rumored to play Nightwing in Arrow.