OK, this can probably be tagged.
https://www.openstreetmap.org/node/4073626109
https://www.openstreetmap.org/way/1059258933

A thourough review of access conditions here might be carried out; I tried to put them on a coherent grid of roads around La Chaufferie.  If the last footway is set as access=private, normally routers will behave as expected.

Leaving this note open until we can check the last footway.