Ann: High Grade Copper intersected at Horse Well Prospect, page-387

The probability of this scenario occurring is very very low.
Firstly, ODW is on average around 800m depth to basement (See cross section from quart report 2019), not 350m.
Secondly, the hematite breccia that is host to the ODW mineralisation shows up like a giant beacon on gravity residuals. If the mineralisation continued into the CHK tenement, then on their internal modelling, the gravity residual would be very very obvious. And so the geos would have drilled right into it, not on the very tiny edge.
The only way your diagram could play out is if SOMEHOW, the oak dam west body switched purely into a ISCG* style of mineralisation going into the CHK tenement (ala Eloise/Kulthor in Mt Isa region), and therefore didn't have a gravity/magnetic signature. That is very very very unlikely.