Good point. I've always been curious about that timestamp. Now, due to the girls 1:49 arrival time, per the PCA, I think there is only a few minute window where they could have taken the pictures vs uploading them. We know the video was at 2:13 and describes A crossing the bridge with the man following behind her, so the 6 minutes between the 2:07 timestamp and the known 2:13 video is still enough time for BG to enter and cross the bridge, imo. Add a couple minutes before uploading and it's more than enough time. Especially for someone who's crossed it before. Jmo.
As for the delay in him getting on the bridge, I feel it could have been because they were recording, however, it also could have been him waiting for the lady who saw him on the bridge to get farther away (if he was even aware of her), or he could have walked up the trail to see if anyone else was coming. Jmo.