Next, his team jet across the country to Vancouver, where they will play Qatar on Thursday. One luxury afforded the co-hosts is an extra day's break between games.
Marsch could do with it as he weighs up his options.
He admitted Jonathan David 'didn't have his best day' but argued that Larin's goal could spark a wider release.
'A home World Cup is a different occasion. It's a different feel,' added Marsch.
'I do think we'll learn from this and if you look at World Cups historically, doesn't matter if it's Argentina losing to Saudi Arabia last World Cup or different scenarios where it starts a little bit tense in the beginning stages.
Then the games come more to life and you see truer versions of teams.'
In the second half, when Canada were building momentum, Alphonso Davies sat on a cooler on the edge of the home dugout, his chin perched in his hand.
The captain needs time to recover from injury, as does defender Moïse Bombito.
Perhaps the greatest gift Larin delivered was time. The equaliser also helped give Canada its moment of belonging at its own World Cup.
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'I haven't scored in a while, but I knew it was coming,' said Larin. 'I've always come up [big] when Canada needed me.'
