Print audio from Midi Track (not Instrument Track)

[hardcase]

Hello, I am having a problem...I have searched and experimented ad nauseam.

Using an external midi device, an EPS16+ sampler to play 808 sounds, it seems I HAVE to use a Midi track. The controller is my Axiom 49 sending midi out to the external sampler. The sampler's Audio Out is going into my Apollo Twin. All good, can record and playback midi no problem, just have to designate USB on or off in my Axiom 49 keyboard controller.

I want to print my midi to audio in pro tools. I have tried using Aux, Instrument, and Audio tracks with all appropriate routing. I can't Bus midi, my only output options are the Axiom or other VI's I have on other Instrument tracks. So no going to an Aux or an Audio track.

As the sound of the external sampler is going into my Apollo, I thought I could just have it routed to an Audio Track's input and there it would be. Not so. Nothing there. Why?

I can route an Aux track to play the sampler's audio but it is extremely late/behind the session tempo, extreme latency. Very unusual to me but maybe that's normal? How do I compensate and on which device? Pro Tools or Apollo? But as there is audio on that Aux track I tried bussing to an Audio track, but there is no sound appearing on the Audio track.

Hope this makes sense! Thanks for any help