SA Airlink (Pty) Ltd., known and trading simply as Airlink, is an airline based in Johannesburg, South Africa. It is privately owned, and its main activity is to act as a feeder airline between small towns and larger hub airports. It has code-sharing and schedule co-ordination agreements with South African Airways and South African Express.The Competitions Commission of South Africa is currently investigating several complaints against the Airlink SAA and SA Express Franchise agreement as being a cartel.

Can we conclude that is sa airlink the same as sa express?
no