Cannot output/capture VANC data

Decklink Driver 11.7
SDK 11.7
WinSrv2012R2 x64

Decklink Extreme 4K HDMI output connected to the HDMI input of Intensity Pro 4K. Both on the same hardware.

SDK sample VANCOutput on one side, VANCCapture on the other side.

Cannot see VANC capture on the receiving side.
Any settings I am missing?

Regards,
Altug

I think VANC output/capture over HDMI is not supported.
Changed cards (Decklink Studio 2 --> Decklink SDI), switched to SDI and it started working!