STW mde an interesting point about how Tolkien never wrote the Palantiri into his First Age legends.
I have a theory on why the Elves of Rivendell and Lorien(if they had Palantiri) never made contact with the Orthanc and Ithil Stones. The Palantiri of Numenor were 'configured' solely for the Numenoreans' use and were used for administering their large kingdoms. Maybe they could only communicate with other Numenorean Palantiri. Other Palantiri like those of Rivendell and Lorien(provided they existed) would not be configured to communicate with Numenorean palantiri and therefore could not be used to, say, contact Orthanc.
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