"At one point there were fears for the entire banking system; when the recession was at its worst, industrial production was collapsing more quickly than it had in the early stages of the Great Depression."
(The Guardian.)
Does "had" stand for the past perfect continuous "had been collapsing" in the sentence above?
You are right - 'had' stands in place of the repeated 'had been collapsing', which would be superfluous.
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You are right - 'had' stands in place of the repeated 'had been collapsing', which would be superfluous.