Help info needed on oudie n ewmicrorecorder

I am an old geezer returning to soaring after years of hiatus. I go back to sectional maps, hand held final glide calcs n cameras mounted to the canopy. I purchased a glider with an oudie and a ew microrecorder with a handfull of cables.
a few questions:
I can work the oudie ok, its great and I understand the microrecorder records flight data, but

-does the ew recorder record the flight data it captures itself? I see the remote gps is plumbed to the recorder.

-does the recorder record the data it gets from the ouies gps?

-do I need to have an interconnect between the oudie and the recorder? or can I just let the ew recorder capture its internal data to give me a record of the flight. I see some comments saying improper plumbing of oudie to ew recorder will cook the ew recorder.
Any help will surely be appreciated.

Dan