This is one of the best shows I have seen this year. A very good sci-fi drama with wonderful acting by the cast. I do understand some character development has not been done in a proper manner but overall you will surely enjoy it.
If we watch carefully there are small hints depicted by the director which took the story ahead beautifully. I loved the closed ending and not leaving it to the public.

This is definitely not for people who do not enjoy such genre or such concepts or want more chemistry to be shown.

Personally I loved it alot. And I do understand people have different tastes and choices. So that's alright.

Have a good watch.