Once the drinks were distributed, Max passed the lead off to Nico, who was a walking repository of historical and technical information, to begin with. As such, she was much more qualified to lead this conversation.
"Let's start at the beginning. A million of our standard years ago, our species wasn't even sentient yet. We only began our major developments in sentience a few hundred thousand years ago. So, we never interacted with them to our knowledge.
However, as we expanded around our Galaxy, we found signs that we weren't the first ones there. Abandoned planets with ancient ruins well beyond our knowledge and abilities. Odd spatial anomalies, like groups of planets arranged in identical patterns and rotations around nearly identical stars. Things that we could have never done as a species.