After monitoring for a few hours, duplicate is the wrong term. They are not coming up patched. Seems to be linked via page calls.
CACC console 14973 pages to 37911 then 28226 calls to TG34720. This broadcasts the initial call then the comm continues normally on the south TG.
CACC console 14974 pages to 37912 then 28239 calls to TG34736. This broadcast the intial call then continues the comm on the north TG.
I guess the best way to call it is pre-alert or something like that. This doesn't happen on all calls.