What would you gain from doing that? 

I was asked if that would be possible, that's all

It might be theoretically possible to send the data as OSC to Unreal, but it wouldn’t handle lens distortion and it would just add an unnecessary layer of things that could go wrong or reduce accuracy. Bliss already sends tracking data as OSC, FreeD and LiveLink over the Ethernet. It would be much better to run the Unreal project in Aximmetry on the workstation receiving the tracking data.