Surely going past one another in the DRS zones is too their advantage?
It gave a slightly quicker lap time due to having it open. I Can't see it using any more fuel unless opening the DRS also boosts engine map/revs?
That was the theory we were discussing here during the race, but they haven't said that's what they were doing, and Rosberg spoke about it as if he was trying to pass, rather than catch the RBRs as a pair.
Rosberg had 2 chances to beat Hamilton when they were racing that he didn't make stick, so I don't think he can complain to much about the team not letting him pass later.