I watch parts 1 and 2 back to back. Like many, I was disappointed by the last two episodes of part one. That was simply because I wanted a happy story resolution. The writers could easily have done that but logically expanded the story to its next logical step. If I had to wait a season between parts, I would have been devastated. Fortunately I didn't have to do that, going straight to the second part. I was tremendously rewarded.
In total, there's 30 episodes, each running up to an hour and a half. That is a massive amount of story!!!
I'll keep it short. This series, even when viewed as a dub, is one of the best, if not the best (depending on the day) televised programs that I have ever been privileged to watch. The writing was incredibly well done. The world building was intricately developed. The acting was top notch. The production and music was excellent.
I can't recommend this more highly. Absolutely superb.
