A VST (synth) needs to be hosted. In this case the host (which is BIAB) handles the ultimate Input and Output. So I don't think there is a way to send EZKeys midi to a seperate output since EZkeys can not host a seperate VST. But I could be wrong on that.

Of couse this can be done in a DAW, but routing signals is what the DAW does.

But it is an interesting thought.

BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6