I am in touch with the OE4T people who are currently also working on understanding NVidias stance on their own so-called OTA process and the usecases it supports, and which it does not. As far as I can see, there is still a lot of moving parts there. My suggestion is to join their [project chat|(- Gitter) and try to find a way forward there. Feel free to ping me there too in order to hook you up.
Greetz,
Josef