OA(API question)->Recruiter Screen (why hubspot, what do you know about hubspot)-> two technicals(merge two sorted arrays)-> 1 system design(design netflix) with behaviorals(give a time where you given feedback, give a time where you failed) in between.

Nailed the OA, Nailed the technical but declined after the culture interview, I thought it had gone well but apparently not. No feedback so it felt like a waste of time.