Your question is Resolving a Complex Technical Blocker. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time you ran into a complex technical problem during a project that threatened delivery. Walk me through how you diagnosed it, how you worked with the right stakeholders to resolve it, and what the outcome was.