Direct CV position requests

We are developing a geo-aware AR app. Currently, we are using an old version of ARCore - a non-package version. This allows us to grab the current position in CV (computer vision) coordinates directly from within Update and post-process it with GPS coordinates to get a final position. When upgrading to ARFoundation, we found that ARFoundation wants to control the camera and so such post-processing is not possible as-is. The best we came up with was to create an auxiliary camera that ARFoundation can control, and then grab the coordinate from that auxiliary camera for post-processing and application to the real camera. This ended being off by a frame as the camera position is updated after Update. It would be nice/wonderful to be able to have a direct way of grabbing the CV position in Update. Is this possible? If not, can this feature be added?

Team suggests that you try using LateUpdate or OnBeforeRender: