How to control external synths with the Syntakt

I own the original Phoscyon, but always preferred the sound of AudioRealism’s ABL3, not that I use VST instruments much these days as I’m mostly DAWless. Apparently D16 have updated the sound engine in Phoscyon 2, but still not sure I’d upgrade. It does have more parameters than ABL3 though, more like a devilfish emulation.