"I was a bit confused".
"Some of the marshals were already celebrating", he said.
Harlow said she was simply told by a race official to wave the flag when she did, while the FIA's Whiting confirmed that it was "a communication error".
The Mercedes driver was grateful after revealing he feared a potential engine failure, but he gave up his lead in the championship, which is now headed by Vettel, who is one point ahead of his rival.
F1 spokesman Matteo Bonciani said there was confusion getting the message from a course official to Harlow on the platform. "Hahaha but so grateful everyone was safe today and no one got hurt!"
As a result, the results had to be counted back to lap 68 rather than the scheduled 70.
While Vettel and Ferrari rejoiced in their first Montreal win since 2004, which ended Hamilton and Mercedes' three-year supremacy at the Circuit Gilles Villeneuve, the Englishman, hit by engine problems, remained defiant about his title defence. Lewis Hamilton (Mercedes) 21.559, 6.
Ferrari driver Sebastian Vettel, of Germany leads Mercedes driver Valtteri Bottas, of Finland and Red Bull driver Max Verstappen, of
"Fortunately, we had radio and we had the lap counter in the auto and my pit board was accurate", said the four-time world champion Ferrari driver. "I think this is a major wake-up call for every member of the team".
"Everybody needs to assess how to improve our performance. Those marginal gains are going to make all the difference". After this, he raced hard, hardly put a foot wrong but we didn't have the pace for any more.
"No, it's never easy", said Vettel.
The championship continues with the French Grand Prix next weekend. "It's nice to become part of that story, hopefully a little bit more in the future". After struggling during practice Friday, the German qualified on pole - his fourth of the season - and then cruised to victory on Sunday, while Hamilton could only manage a fifth place finish. But it could get a lot worse.
"It doesn't matter where I start on the grid, I don't look at any driver and say "I might lose to that person". Although no changes of the results occurred within the top ten, even with the early race finish, Daniel Ricciardo lost his fastest lap time as it was set on Lap 69, while Kevin Magnussen's pass of Sergio Pérez for what would have been thirteenth position was nullified. After arriving in Montreal, Verstappen half-jokingly threatened to head-butt any reporter who asked about the crashes.
After 42 laps, sadly, Fernando Alonso's 300th Grand Prix weekend came to an end when, chasing 10th, he was called in to pit and retire. He retired to the garage after 43 laps - the eighth time he failed to finish in Montreal. "It was a mechanical failure, so the auto ran hot from the first lap". A year ago, Stroll picked up the first Formula One points of his career in his hometown.
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