Safeway brands are sold at Winco. Does Safeway Corp. own Winco in anyway?

No!

In the grocery industry, many companies that produce goods will often package them under different brands and distribute them to other chains. WinCo happened to have agreed to carry some of the products that Safeway makes. They also carry a number of products that Supervalu makes, among others. No matter who they get their items from, they are still cheaper!