In this scenario I think it’d be likely that they’re being quiet for some reason that’s literally incomprehensible to human-level minds, since they’re likely millions or billions of years more advanced than we are.

Why’s that? It’s not an imposition on my part, especially given that unlike the usual scenarios where the reason one might imagine them to be more advanced is that they aren’t nearby and are capable of reaching us from afar somehow.

Scenario I’ve posed is pretty basic, say some extraterrestrial civilizations were nearby (say, we’re both able to travel & communicate in a more timely fashion than waiting decades for each trip/exchange), but they’re not talking to us because ??? and so…How might ya get’em to meet & talk?