Going on fantasy here, but imagine if the Prime Directive were real and that the Litmus Test for making First Contact was to do random random fly-bys at high sp

Going on fantasy here, but imagine if the Prime Directive were real and that the Litmus Test for making First Contact was to do random random fly-bys at high speeds... only qualifying civilizations would be able to detect the fly-by, send a probe, and catch up to it.