New Zealand's Devine cut a resigned figure as she came out to bat on the ninth ball.
Although her side narrowly avoided losing a wicket on debut for the third time in three matches, thanks to Susie Bates overturning a lbw decision when there was nothing, two wickets in three balls derailed their promising start.
Bates' run out, which caught her off guard as Meli Kerr lunged for a single, was unforgivable and was the fifth powerplay wicket lost by New Zealand in the tournament.
Fortunately, Devine has been in good form in the tournament, scoring 112 and 85 in his previous two innings, and with Kerr's dismissal in the 11th over left-handed, New Zealand teetering on the brink of total collapse, it has found the perfect partner in Halliday.
They had to play a long game against Bangladesh's battalion of slow spinners who found it difficult to get the ball out of bounds. Quite atypically, Devine didn't score a run until the 65th ball of her innings.
Instead, they were content to trade singles and were at around four overs during their perfectly timed performance. Any aggression came from Holliday, who had success in clearing.
This set the stage for what Halliday called “party time” in the final 10 overs, with nine of New Zealand's 23 boundaries coming towards the end to push them beyond 220 before their bowlers broke through Bangladesh.
But the resounding nature of their victory could not hide the White Ferns' grave concerns.
Devine scored 260 runs in the tournament – or 37% of her team's runs – while Halliday was responsible for the other two 40+ knocks. As for Georgia Plummer, Bates and Kerr, they combined for just 121 runs.
New Zealand have a win on the board but relying on Devine's intervention with the bat is not a sustainable strategy as they attempt to progress beyond the initial group stage for the first time since 2013.
