I thought it was
Good friends and a bottle of wine
From Ted Nugent
What is, or is not, success, is a very personal measure. Mine is not likely to satisfy you. I've had two certain, probably a third, sightings ... over 40 years. I've had camp visits, tenuous interaction, very basic communication (demonstration of "I am here"), and been within 7-9 inches of physical contact. My personal evidence, though, is limited to a couple of audio recordings reasonably labeled ambiguous because for someone not there, there's missing context, and a few track photos.
I'm not on a quest for proof, I'm on a quest for understanding. Sometimes those intersect, sometimes not.
MIB