Federation and Siren

I write knowing not much about mining...... but given the geographical proximity of Federation and Siren (i.e Siren surrounds Federation's holdings as per maps in the latter's presentations) does anyone know whether the two have ever had discussions about a common approach/facility to/for processing? Seems silly to waste funds duplicating everything. Even agreement in principle to a modular approach seems sensible. I say this not only for efficiency reasons but also because the two combining would provide greater political and economic heft in getting approvals and local community commitment. Thoughts??