VANCOUVER – Liam Millar saw what so many saw.In the second half of Canada’s 2-1 loss to Switzerland to send them into second place in Group B, their entire game changed. Canada’s substitutes provided intense energy, physicality and an offensive push.“(Switzerland) didn’t really like it when you get aggressive with them,” Canada’s winger said of how he and the substitutes changed the game in the second half.It all felt similar to how Canada looked in the second half against Bosnia and Herzegovina, when they came back for a crucial draw.Let’s call Canada’s wild win over a weakened Qatar an anomaly. And so Canada’s best moments have come in each second half when head coach Jesse Marsch’s decisions reflect a head coach going after a game. That attitude is exactly what Canada now need before their Round of 32 game in just four days time.Canada’s relative inexperience in the World Cup plus the enormity of this tournament on home soil has meant every Canadian game has been the biggest in the program’s history.But, once more with feeling: Canada’s Round of 32 game in Los Angeles, probably against a testy, counter-attacking South Korea side that has similar traits as Canada, will unquestionably be the biggest in the history of the sport in Canada.Win and Canada could be taken more seriously in international soccer. And with that comes heightened, long-term interest in the sport across a country whose eyes are often drawn elsewhere with sports.Lose and the collective “Yeah, but” of this World Cup for Canada will be difficult to hear. Yes, Canada demolished a lowly Qatar side. Yes, they got out of their group, which is an important and applaudable achievement. But if they lose at a point when interest from the entire country will never be higher — win-or-go-home games just hit different — it will be difficult to call this World Cup a massive success for Canada.A success, yes. But Canada Soccer want a massive success because the chances to capitalize on a home World Cup are few.So, how does Canada make the most of what they’ve experienced through the group stage?They are playing under a manager whose entire coaching philosophy exists in fifth gear. It’s time for Marsch to throw everything he has at the wall.If not now, then when?Canada fought and pushed forward as valiantly as they ever have under Marsch to end against Switzerland. They attacked Switzerland in waves. They pressed with purpose to win second balls. The 50/50 duels always felt like they were Canada’s to lose. A draw felt within their reach.