As nobody answered: I do not see why you must have Two TVH servers?
I have a single TVH at RPi: it is connected to my 3 DVB-T tuners, to all my local surveilance cameras and to IPTV channels. They are all listed together in TVH, regardles of where the source of the image is.
For DVB-T channels, I pull EPG from OTA (from chaneels themselves). For IPTV I pull EPG from the Web and integrated it into the same TVH, too. My cameras obviosly do not have EPG, they are here just so I can switch to them immediatelly should I wish to see their feed at my TV.
I am watching all these video feeds on multiple devices. And their EPG.