These are the specs of the SD vs HD files.
Both are pro-res files, both 29.96, fps, both have a (;) in the TC.
One is 720×486, the other 1920X1080
Is that the info needed to make a determination? The files do not have the same starting time / ending time.
In some cases, a one hour SD file was broken into 2 half-hour HD files.
Nightmare, yes?