Is there a way to take an IR output from an HDMI extender to an IR block?

I have a low budget installation with centralized AV and multiple TVs. I wanted to consider using an IR remote in each TV room (say URC MX-450 or ProControl using IR output). The remote would point to the IR receiver included with a Wyrestorm or Key Digital HDBaseT extender then eventually control source equipment and HDMI matrix at the head end. I know there is a large risk of interference at the IR receivers. But say there wasn't, the remotes are going to control shared components and I would use some sort of IR block that uses an IR bus as an input.

The HDMI extenders usually have an IR output on the component side but I'm not sure if I can integrate that two conductor circuit into a 3 conductor IR bus. I have not done an IR system this big in a long time so I can't even remember if that was possible. Does Xantech or other have an IR block that can accept an output that's meant to drive an IR emitter? Would like to avoid sticking multiple IR emitter onto a single IR window.