That could well be the case. But I suspect that there's also a great deal of variability in what people mean when they say "conversationally fluent". For exam

That could well be the case. But I suspect that there's also a great deal of variability in what people mean when they say "conversationally fluent". For example, I completed the entire French tree in Duolingo a few years back, and would consider myself nowhere near "conversationally fluent".