“Give us a clock tick” is an expression uttered several times in “Wicked: For Good.” But Jon M. Chu’s two-part musical has asked for quite a bit more than that.

Together, the two halves of this “Wicked” adaptation have run 297 minutes, which, more than the threat of lions and tigers and bears, is enough to make any moviegoer not entirely bewitched by the “Wizard of Oz” revision breathe a sigh of “Oh, my.”

So it’s a lot of clock ticks, quite a few more than the stage musical , which had roughly half the runtime. But “Wicked” has always been a spectacle of scale: power ballads and sprawling sets, all in retina-testing technicolor. Muchness is part of the point of “Wicked,” a song-and-dance assault of allegory and anthems relayed with an earnestness that you might call endearing if you’

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