Where does “woodblock” come from?

I appreciate the detailed rules, but I need to flag a problem with this etymology chain: it appears internally inconsistent and doesn't follow standard linguistic principles. The chain shows English "wood" deriving from Old English "wudu," which is correct. However, it then lists "Middle Dutch blok" and "Old Dutch blok" as predecessors, which doesn't make sense—Dutch forms cannot be ancestors of Old English forms that predate them by centuries. Additionally, the Proto-Indo-European forms at the end (widʰu-, bhulg'-, bhelg'-) don't clearly connect to either the "wood" or "blok" branches in a way I can justify. For the headword "woodblock," I'd also need to know whether this is being treated as a compound of wood + block, or as a single lexical unit with its own etymology. **I cannot write an accurate one-sentence origin summary

woodblock (English): A woodcut; A percussion instrument consisting of...

Definitions

  1. A woodcut; A percussion instrument consisting of...

Ancestry of “woodblock”, step by step

woodblock traces back through two separate lines of ancestry.

via English block

StepLanguageWordMeaning
1EnglishblockA substantial, often approximately cuboid, piece...
2FrenchBlocBloc — Bloc Québécois (Bloc québécois)
3Middle Frenchbloca considerable piece of something heavy, block
4Old Frenchbloclog, block
5Dutchbloka block; a street block; a political bloc
6Middle Dutchbloktreetrunk
7Old Dutchbloklog
8Proto-West Germanicblokkblock, log
9Proto-Germanicblukkąblock, log
10Proto-Indo-Europeanbhulg'-
11Proto-Indo-Europeanbhelg'-thick plank, beam, pile, prop

via English Wood

StepLanguageWordMeaning
1EnglishWoodAn English topographic surname for someone who lived in or near a wood
2EnglishFrogAlternative form of frog
3Portuguesefrocoflock
4Latinfloccustuft, wisp of wool
5Frankishflokkodown, wool, flock
6Proto-Germanic*flukkô
7Proto-Indo-Europeanplewk-to fly, flow, run; to splash, to flap with hands
8Proto-Indo-Europeanplew-to fly, flow, run

Words derived from “woodblock

Every word from Proto-Indo-European bhelg'-