The oil pump is driven by a chain. If the oil pump chain broke, it could have become lodged in the timing chain and broke it in turn. Oil pumps themselves usually don't "break" but could wear out over many, many miles, causing gradually lower oil pressure.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970