Froome had nothing to do with stopping Aru's attack.
I think that's patently untrue. Why did Aru not go?
Aru went and Porte chased him down and told him to stop because of the mechanical.
Not sure how froome could stop him attacking when he's further down the climb getting his bike changed...
@Fox started
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Froome had nothing to do with stopping Aru's attack.