Hamilton's untelevised team radio revealed after Brazilian GP

Untelevised team radio from the Brazilian Grand Prix has shed light on Lewis Hamilton's exchanges with Ferrari race engineer Carlo Santi during a chaotic race at Interlagos. Hamilton finished a lapped ninth as McLaren's Lando Norris took victory.

Hamilton started 20th after a 65-place grid drop following a further engine change ahead of qualifying, and dropped to fourth in the drivers' standings with three races remaining. The radio messages show him repeatedly asking the pit wall whether it was listening, questioning his position and asking Santi to repeat instructions, including about boost and a switch change.

Hamilton pitted on Lap 14 for softs, becoming the first driver of the front-running teams to do so. Later, he was told to do the opposite of Nico Hulkenberg in an attempt to undercut the Audi driver, with Santi forced to ask twice about a front wing adjustment.