Here's what I mentioned about the JF-17 and F-16 datalink interaction (will post this in the JF-17 section as well)
Any time a contact is detected by the JF-17, the F-16 no longer sees it on datalink
The server track is the JF-17, the other track is the F-16 server-20200121-205210.trk Viper_DL_Test-20200121-145232.trk