[1] He grew up alongside three siblings: Eva, Alix, and Adrien, the former who plays college ice hockey for Brown University of the National Collegiate Athletic Association (NCAA).
[3] At the end of the season, Durandeau played on the Lac St. Louis Lions under-13 team at the Équipe Québec annual Hockey Tournament, where they finished 13th overall.
[1] Durandeau began the 2014–15 season with the Lac St-Louis Lions in the Quebec AAA Midget Hockey League (QMAAA).
[11] Durandeau scored his first career QMJHL goal on September 19 against the Saint John Sea Dogs to help lead the Mooseheads to an eventual 5–1 win.
In November, Durandeau was a last-minute selection for team Canada Black to compete at the 2015 World U-17 Hockey Challenge.
[14] By mid-February Durandeau had tallied 12 goals and 21 assists for 33 points and was honoured by the QMJHL for being a player who "exemplifies the importance of academic achievement.
[23] In March, Durandeau was named a nominee for the Marcel Robert Trophy as the QMJHL's Scholastic Player of the Year.
[26] During the third round, Durandeau scored the game-winning goal in the second overtime period to lift the Mooseheads to their first win of the Semi-Finals against the Drummondville Voltigeurs.
[27] He later scored his seventh postseason goal in Game 6 to help the Mooseheads win the series and qualify for the President's Cup Finals.
[30] He was recalled from the AHL and made his National Hockey League (NHL) debut with the Islanders on February 20, 2023, against the Pittsburgh Penguins.