J.P. Morgan Front End Engineer interview questions

30 min video call with an engineer diving into javascript mechanics. Passed with flying colors, but interviewer was 30 minutes late for a 30 minute interview. Second phase is where it went wrong, I was suppose to have a 30 min call with a product manager, followed by a 1.5 hr technical challenge. What I ended up having is a 1.5 screening first, the interviewer seemed lost as to what kind of challenge to give me. They were also having microphone issues and their audio was very low and difficult to hear. I had to do a create react app followed by a vague explanation of what they wanted me to build. Asking clarifying questions seem to upset the interviewer. They told me to reschedule the second interview with product, so I reached out to reschedule, however I received a rejection email 30 minutes after reaching out.