>>149511066
I think you may be confusing TNBA with the Adventures of Batman and Robin series.
TNBA also had execs request Batgirl and Robin as regulars, but a lot of the rest seems more like assumptions that the same stipulations extended to TNBA, where they'd deal with a different network execs due to the channel shift.
Especially saying the art style change was a mandate, when Timm has said he wanted it himself due to preferring the consistent look of STAS