For the record, I got no problem with the grammar of that statement, but with the meaning.
it really should be “somewhat tied together.”
It should be “weakly tied and mostly disconnected.”
I see you point. What I meant was that ROTS ends with the Empire established, Vader “born”, Obi-Wan in hiding, and so on. And we find the same situation at the opening of ANH: Luke and Leia are grown ups, Obi-Wan is older, but the setting is the same, that’s the natural evolution of the situation we saw at the end of ROTS.
And we should have seen something similar between the OT and the ST. Instead we discover that too much has happened between the movies and the situation at the beginning of TFA is the opposite of the one at the end of ROTJ.