How do I get this working? do I need an actual BNC to Component cable? or did I buy the wrong extron crosspoint?
What’s not working? There doesn’t seem to be a problem with your setup.
Surely your chain should be
Gamecube Component Cable > RCA to BNC Adapter > Extron Crosspoint
Original Xbox Component Cable > RCA to BNC Adapter > Extron Crosspoint
Extron Crosspoint > BNC to RCA Adapter > OSSC AV2
Is that what you meant?
The official “component cable” was actually a breakout box bundled with straight RCA cables–it wasn’t an all-in-one cable solution like almost all third-party cables were–so using those RCA cables to connect the CrossPoint to the OSSC makes sense here.