What are best practices for offshoring in your estimation? Does your team work directly with devs or is there an intermediary offshore layer to manage the peop

What are best practices for offshoring in your estimation? Does your team work directly with devs or is there an intermediary offshore layer to manage the people actually pushing code? From what I read the variance in quality of offshore engs is huge. I get a lot of connection requests with offshore managers, don't know if they're worth it or you should just hire offshore devs directly and manage them yourselves. Its hard because you don't know the nuances and blindspots of engineers in different countries and cultural issues.