Montgomery said that Zacha's lack of a shooting mentality could be related to playing so much alongside David Pastrnak and opting to defer to his fellow winger, who's already racked up 35 goals this season.
"I think there's a Pastrnak factor with everybody," said Montgomery. "Even [Patrice Bergeron] will overpass to try, because you know if it gets there - like that goal he scored, his second one [against the Flyers], the adjustment on his hands to shoot that far side, that's unreal."
For Zacha, the chance to play alongside Pastrnak and David Krejci, his two countrymen, has been a pleasure, as the trio has developed quick chemistry over the first half of the season.
"Those are probably the best players I've played with [in my career], so it's fun to play with them," said Zacha, who is up to seven goals and 28 points this season, the latter of which is just eight points shy of his career high set last year with the Devils.
"I think it's just that they are really smart players. They find me in situations. I think they are really good at talking me into where I need to be. And just the whole line, we love to play together.
"It's something that, we're good friends on and off the ice and I think it helps you to get confidence to know where the other person is. It's been great playing with them this season."
And in many ways a dream come true, especially when it comes to skating on a line with Krejci - who he grew up watching and idolizing back in Czechia - during the veteran centerman's 1,000th career game.
"It was very special, I think for everyone, but for us to be able to play on the same line as a guy who grew up in Czechia watching him, I never thought I would be able to play with him, his 1000th game, too," said Zacha, who scored off feeds from Krejci on both of his goals against the Flyers.
"I enjoyed every shift that I had and just seeing how the whole fan base and everyone loves him here it's something really special so I was happy that I was part of it."
