I imagine the conversation in the passing alien ship went something like this:

“Jake, you think we’d be able to maybe, you know, send a message to the inhabitants here? Like, just to let them know they’re not alone in the universe?”

“You have to be careful with stuff like that, Aaron. There are so many ways a message like that could be misinterpreted. You have to be sensitive to how they think and operate.”

“Ooh Jake look! There’s another one of those big drawings they’ve made for us. See? That’s what I’m talking about. A simple picture or design to demonstrate our val-Oh sweet McJesus will you look at the size of that thing.”

“What are y-Holy fuck.”

“Jake I don’t think we can compete with that.”

“Yeah….”

“Jake?”

“…”

“Jake stop staring at it. Kinda weird.”

“Wh-huh? Oh yeah, see, we don’t want the natives here to misinterpret any response we might make to…to uh, that.”

“So…just do some scans and head back?”

“Yeah sure. I’m gonna leave my number though. Always good to keep the lines of communication open.”