There are two technical rounds :
Technical I : Mostly experience based and direct questions on some basic SQL, Power Bi, Python Concepts along with some Excel questions.
Technical II : I have to explain my project from the very scratch and the thought process of the approach. Try to explain everything one by one, the interviewer will just try to understand you in depth knowledge. In my case, I even explained the dax queries along the problem statement. He/She might give a situation based question to just check your approach. And please prepare for the storytelling. This is the ultimate key.