That's crucial to this argument. Not putting up a fight (which Hamilton probably wouldn't have) is very very different to having to slow down to let Rosberg through.
Rosberg was told by the team that Lewis was letting him through, therefore Nico needn't challenge him. Nico didn't challenge him because he didn't think he had to. That's why he kept asking, not because he asked for it. Without being told that we may have seen a little battle.
Rosberg was told by the team that Lewis was letting him through, therefore Nico needn't challenge him. Nico didn't challenge him because he didn't think he had to. That's why he kept asking, not because he asked for it. Without being told that we may have seen a little battle.