Lights over Salt Lake City

I was outside looking towards Salt Lake City and I noticed 2 bright white lights, East of the Big Dipper, that were slowly moving. The 2 bright lights continued slowly moving toward each other, when a 3rd white light appeared, and all 3 lights began moving toward a central point. Before the 3 lights got to each other, all 3 lights slowly disappeared and never reappeared. The bright white lights were not blinking. Commercial aircraft were flying in the area in their normal path to the Salt Lake City airport.
This occurred about 10 minutes before the Starlink satellites passed overhead from West to East.