If I understand your question, sending audio back to the stage does not necessarily mean the signal goes to another console for monitors. Normally, the talk-back is just routed to a monitor mix (aux send).
Sometimes, it's just easier to use the highest available channel (i.e. channel 32) as a talk-back (set that channel for analog). Then, all you need to do is route that mic to whatever monitor (aux output) you need. This is how it usually works in analog (simplest and most effective).
What are you using for a stage box?
