Wasn't near Lake Michigan myself - I'm up in Yorkshire - but I'm curious about something that might be connected. A mate of mine spotted what he described as a slow-moving triangle over the Pennines on Wednesday, roughly 36 hours after your sighting. Completely silent, no navigation lights, maybe 300 feet up at most.
My question is this: did the craft you saw appear to be at low altitude, and was there any kind of electrical interference around the time of the sighting? His phone died completely and his car hesitated on startup afterwards. I know those details get reported a lot with triangle UAPs and I want to understand whether its a consistent pattern across multiple incidents or just coincidence stacking up.
Also wondering if anyone has mapped these sightings geographically. Do they cluster around large bodies of water specifically or is that just confirmation bias on our part because lakes and coastlines are easier reference points for witnesses to report from.