Simple past tense and past participle of overlap.(verb)
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Use "overlapped" in a sentence
"We were never in the same schoolroom, in the same game, scarce even in step together or in the same phase at the same time; when our phases overlapped, that is, it was only for a moment -- he was clean out before I had got well in."
"Screenings of acquisition titles overlapped others, forcing teams to split up rather than watch together."
"Some of these calls overlapped to the same phone lines as needed."