The animation style and especially Nightwing is very similar to "Under the Red Hood" so it might be seen bey following the same series, although it is never made clear and the actors are not the same. Batman appears bey a skeleton in a vision in the episode "Hourglass" https://damienacccb.losblogos.com/31091051/bir-unbiased-görünüm-betmanta-yeni-giriş