How can you tell how closely coupled a codebase is when you're in the interview process and not yet an employee? This is the real challenge. I don't think many

How can you tell how closely coupled a codebase is when you're in the interview process and not yet an employee? This is the real challenge. I don't think many companies, outside of perhaps small startups, will let you view their code - at your own perusal so you know they aren't just showing off the good stuff - to candidates.