Started of with his introduction, what he does and then asked about my intro, followed by a project from my resume and the technical challenge I faced.
The question was :
https://leetcode.com/problems/design-an-ordered-stream/

Asked me to not use vector and then many follow ups. Asked me to not copy the variable, did not understand what he meant by this until he told to pass by reference.
I performed okayish I guess, could solve the question using hashmaps as we dont have a fixed number of streams coming in.
I would say, prepare OOD very nicely, even if you know how to solve the question, the way you solve matters.
Waiting for the results, interviewer told me I will get it within 5days if I passed the phone screen or not.

Update : Recieved mail, moving forward to the next round.
Thank you Leetcode community for all the help!