OK folks here are the results of my findings and test.
My suspensions have been confirmed.
The POS Dealer Installed ELOGPS that I found under the dash connected to the OBDII port appears to be culprit for additional 340 miles added to the odometer reading.
I removed this POS tracking device, then loaded the 2020 Ram back onto my car trailer and took a trip down the road and back.
I took photos of BOTH the 2003 Ram trip odometer as well as the 2020 Ram trip odometer.
These photos started at our home.
I then drove to a church parking lot 3.7 miles away.
Stopped took photos of each odometer.
Then returned home and took photos of each odometer. Each of the photos have date and time stamps.
NO Increase to the 2020 Ram while being transported down the road on the trailer AFTER the REMOVAL of the tracking device.