IMO I agree there's additional video we haven't seen.
I wish we had the timestamps from the videos we do have, so we could correlate them with the official timeline. I believe that there is probably not video after the 1:47AM "disconnects" event on the timeline. To me, that suggests that the battery was removed, the camera was destroyed, or it was taken far enough away from the house that it could no longer reach the network. It could have reconnected after that and uploaded more (live or cached) video, but we have heard nothing about that (of course there's a lot we haven't heard about...).
The 1:47AM time is the first event of the early morning that we have on the LE timeline, so that suggests to me that it's around when they suspect action started happening. So, based on what we know now, it seems that little if anything happened before 1:47, and I don't think we will get anything from this camera after 1:47. So my hopes for getting significant additional video and audio from during the event from this specific camera (not talking about any other alleged cameras) is pretty low.
All that said, anything is possible. Without knowing what time the videos we've seen are from, we have no way to know how closely those correlate with the "disconnected" event. And I don't put a huge amount of trust into the accuracy of that LE timeline, given other mis-steps, so maybe there's an error there. And perhaps most of the action happened before that disconnection but they just didn't have anything concrete to put on the timeline at the time they published it.
Anyway, here's to hoping, but I am not holding my breath.
My opinion only.