These flights are not considered to be marketed by Expedia - they are always marketed by an airline. When searching the flights, you can check who the flight is marketed by. In the example below, it shows "Delta 7527 operated by Jet Airways," which means it's marketed by Delta.
Jet Airways flights will give credit as long as they are marketed by Jet or Delta. On a similar note, Air France/KLM flights marketed by Jet Airways will not earn credit.