New teams (that I have worked with) go through a similar process every time. Confusion and uncertainty, that can lead to either apathy or aggression, as egos are hurt and people are not used to admitting their confusion, they want to blame others and find fault elsewhere. Then slowly, they find their groove, get more comfortable with the project and start working more confidently and in sync.
When I’m in the same boat with the team, when I’m new, it feels strange but positive — I work at detangling the current puzzle and finding the solution. When I’m already comfortable with the project, but the team is not, that’s when it gets strange. I don’t want to sound like “know-it-all”, because first one needs to build trust with the team, and only then, they will listen. Right now, I feel like whatever knowledge I can offer is getting pushed back as irrelevant, because again, people don’t like to admit their confusion. All I can do is be patient. Don’t push back with my ego, but instead, allow enough time to pass for the team to build confidence in themselves, so that they don’t have to rely on the confidence level of the outside members (non-engineers, and engineers from neighboring teams).