Miles validity: other partners
In addition, if you take a flight with any of the other Flying Blue airline partners, or stay with, rent a car with, or make use of any service from our commercial partners, you’ll extend the validity of Miles earned with our other airline and commercial partners to 2 years.
Do e-rewards and Opinion Rewards surveys count as commercial partners that don't expire as long as you keep doing them? (I'm having problems turning up an answer searching for this)