Red Bull may wish to draw a line under ‘Bibgate’, putting it down to rivals’ “paranoia”, but Zak Brown still has questions such as why is a seal needed if Red Bull cannot access it in Parc Fermé conditions.

Formula One's governing body on Saturday ruled out a deeper investigation of Red Bull's ride-height device while recognising it could not be sure there had been no breach of the rules in the past.

Red Bull have seen their controversial ride-height device come under fire ahead of the United States Grand Prix, with the team's explanation not satisfying McLaren boss Zak Brown