At the level where this matters, the skill to figure it out from context is important. You aren’t the guy converting spec to code. You’re the spec maker.
I start the interview with “I am here in the role of PM and co-engineer so you can bounce ideas off of me and ask any questions”
Stakeholders won’t start their asks with “Please ask me questions to make sure you’re building the right thing”. Asking clarifying questions is a baseline expectation of the role