What if all the Aliens are using a form of "FTL Radio Communication", equivalent to ST SubSpace Radiowaves?
Something where the Radio or EM Signals travels at FTL speeds in a domain we don't understand how to access?
A requirement to join the "InterStellar Community to make First Contact" is to figure out the FTL Radio, otherwise, we're too primitive to even talk to?
We're stuck with Primitive STL Radio Waves, which don't travel fast enough to be "Useful" at Long Distance InterStellar communications?