Rock or compression hit the oil sump and they talk about oil pump possibly and starter definitely being broken.
By the words of Ott this is not an engine issue per se but damage done by this compression.

Imho Ott's very low setup is the root of this cause

DELFI VIDEO SOOME RALLILT | Ott Tänak katkestamisest: midagi tuli läbi auto põhjakaitsme, see ei sõida enam kuskile - Delfi Sport
https://sport.delfi.ee/artikkel/1202...a-enam-kuskile

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