if you stream video over Ethernet the Dante audio part will not be synced to the video.
Audio latency does not really matter because the video latency will kill your realtime performance.
There are several technologies available to send video over TCP/IP networks and have the audio in sync or embedded in the video.
But all of these technologies are not compatible to the ilive. You will need converters.
HD-SDI or similiar protocols would help a lot.
There are some embedder and de-embedder available for HD-SDI wich support AES3 or Dante.
But most of the devices will not allow to send the stream over the network.
HDbaseT is another way to go.
What is your goal? To have one cable from FOH to stage?