Double bidding

There are two companies under one ownership. Each company operates independently with office and sales staff. However the on-site crews and repair facilities are shared. The business is high end decorative windows. Bids are submitted by both companies and have different values. The one owner sets all the pricing. The sales staff is not aware of the final pricing and competes against each other as they would against any other competitor. There is only one commission paid to the winning bid.



It seems this should be illegal and research points to the practice known as complementary bidding. Any advice on how I could deal with this?