Bit of an odd one to ask here but did anyone manage to get footage or screenshots? I wasn't there myself but a friend in Chicago messaged me about it around midnight our time - said there were maybe 4 or 5 lights in a loose formation that weren't moving like any aircraft she'd seen. She's not really into this stuff so I actually take that more seriously than if it had come from someone already down the rabbit hole.
I've been trying to find anything on local news or flight tracker data for that night but nothing obvious is jumping out. Was it reported to MUFON or anywhere similar? And did the lights stay in formation the whole time or did they break apart at any point - that detail tends to matter quite a lot when ruling out conventional explanations.