Hello David and welcome to the Cow Audio Forum.
When I first got PluralEyes, I tested it by rolling my Canon XL2 and an inexpensive Olympus while I played audio from my system in the studio. So, identical audio but recorded by two separate mics in the same environment. I even walked around with the Olympus during recording.
I had to use the "try harder" mode but it worked. This was the original release of PluralEyes. I think things have actually improved since then. I couldn't use both audio tracks due to phase cancellation, but they were synced.
I also did an "exact same audio" test and both tracks did sync with no cancellation.
YMMV,
Regards,
Ty Ford
Cow Audio Forum Leader

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