> but isn't necessarily sufficient in real world usage IIRC Duolingo only claims to get to even B1 level for a couple of their most robust language courses. No

> but isn't necessarily sufficient in real world usage IIRC Duolingo only claims to get to even B1 level for a couple of their most robust language courses. Not sure what you view as sufficient for real world but B1 is about where I'd personally draw the line.