[4] Neighbours joined the Oil Kings for their 2018–19 season, recording 24 points in 47 regular-season games and earning two WHL Rookie of the Month awards.

[5] After returning from a loss with Canada White, Neighbours suffered an upper-body injury during a fight against a Red Deer Rebels player and was forced to sit out for 12 games.

In his second game against the Arizona Coyotes on October 18, 2021, Neighbours recorded his first NHL point as he recorded the primary assist after making a nifty play behind the net and dishing it to Klim Kostin who would score a goal which wound up as the game winning goal in a Blues 7–4 victory.

After playing the first nine games of the Blues season, Neighbours was sent back to the WHL to return to the Edmonton Oil Kings.

On October 16, 2018, Neighbours and Oil Kings teammate Sebastian Cossa were two of 66 players selected to represent Canada at the 2018 World U-17 Hockey Challenge.

[15] The following year, Neighbours was named to the Canada men's national junior ice hockey team for the 2019 Hlinka Gretzky Cup,[16] where he helped them win a silver medal.