Roll-record on Cam 1 (which is feeding its output w/TC overlay into a video monitor).
Roll-record on Cam 2 which starts by shooting the MONITOR coming from Cam 1 so you can read the TC on it for a few seconds.
Don’t stop rolling until you stop BOTH camcorders at the end of a take.
When you want to start up again, do the above procedure each time.
Keep the on-board MICS open throughout the shoot.
Just have someone CALL OUT the TAKE NUMBER each time you roll.
If you play from a CD it will be “dead-on” accurate for sync with your camcorders’ footage in post.
If you start the CD from the beginning each time for each take it will be simple to slide the video into sync with the audio track each time.
If you want to start the CD “deep” within a cut for a given “insert shot” just pause the CD a bit before the actual audio that you’ll be shooting, and have someone CALL OUT the time number (reading on the front of the CD player) where you’ll start from that time.
Capture the audio directly from the CD into the edit system and use it as your base audio track. Then slide the video into place using the audio from the ON-CAM MICS as a reference.