Christian Horner has revealed that Max Verstappen suffered an issue with his radio during the latter stages of the Canadian Grand Prix, resulting in some communication difficulties.
The Dutchman faced a tense final few laps at the Circuit Gilles Villeneuve due to pressure from the chasing Carlos Sainz in second.
However, Verstappen kept his cool and held on to claim his sixth win of the 2022 season.
When asked whether it was a pretty comfortable weekend, Red Bull boss Horner refuted the idea.
"It wasn't very comfortable at all in those last 10 laps or so after that VSC [Virtual Safety Car]," he told Sky Sports F1.
"Because Max just couldn't break the DRS [Drag Reduction System] and the Ferrari was very quick on the straight line today. They could attack the kerbs and stay close.
"But not a single mistake."
Viewed by others:
Horner explains communication issue
Adding to the drama of the closing stages of the race were the problems with Verstappen's radio, though Horner acknowledges that the 2021 World Champion seemed to cope okay without it.
"We lost communication with the car, or it was only one way traffic," he explained.
"He could hear us, we couldn't hear him, but I guess he didn't need to hear us too much!"
Horner has also praised Sainz for how he continued to push Verstappen in the battle.
"All credit to Carlos today, he pushed him really, really hard," the Team Principal continued.
"And the strategy wasn't clear, because we went for that early stop at the first VSC. We felt that that was the best route to the end of the race.
"Then obviously the next VSC came. Carlos got a free stop effectively as well, and he obviously set it up beautifully for the end of the race, and then it was was super tight."
Video: Who are the people on Max Verstappen's team?
In the latest video from RacingNews365.com, we take a closer look at Max Verstappen's own personal entourage and the people that make it possible to concentrate on the job at hand.