When I was new to leading projects as a tech lead I thought showcasing my technical depth in front of my cross-functional partners and my manager by going into technical details made me look smart and important.
I was wrong!
Ability to communicate complex technical issues to all stakeholders in a language they can understand is far more important.
Understanding the technical complexity and distilling it down to simple words that your audience can connect with is the most underrated skill for engineers.
This skill becomes more and more important as you grow in your career.