It comes down to this:
The TCs are irrelevant and negotiations should bypass them and continue with the RoT. It's not as if they are in control of anything or can make any decisions for themselves. The are just kept people.
There is no point discussing anything with the TCs.
The RoC can also arrange with high level meetings with EU Leaders, US, Israel, Russia and go direct to the RoT through foreign high level envoys and mediators.