00.00.00.00 = hours minutes seconds frames.
00:00:06:23 to 00:00:07:00
This is 1 frame
your framerate is most likely 23,976/24 fps (frames per second).
So in short, 85 frames does not exist.
Best is to line up your audio to the video.
You can edit video per frame, as for audio 1/48000 of a sec if timeline is set to Audio Units.