They’re currently in Oak Brook mall and an AD for both brands mentioned. Several years ago they had another store at The Shops as North Bridge, in the city. I only recall seeing Rolex at that location (not Patek).
In the city, Patek used to be retailed by Tourneau in Water Tower (now closed) and Tiffany on Michigan Ave. Razny recently opened a store on Oak Street.
It’s worth mentioning the original CD Peacock location is an architectural masterpiece. It has been a Kay Jewelers for many years. It was vandalized in the rioting of 2020.