Pretty easy to do if there is a standalone version.

- Open Audio MIDI Setup (in the Applications/Utilities folder)
- make sure the IAC MIDI driver is online (double click it, and make sure the "online" box is checked)
- note the name of the IAC busses while you are there.
- Launch BIAB and select "Core MIDI" form the MIDI menu.
- set the MIDI output to the name of the IAC bus you saw in the IAC driver box
- Launch the standalone Halion, and set it's MIDI input to the same bus as the output of BIAB.


Sounds more complicated than it is really.
If it's a plugin then it's a bit tougher, but let me know and I'll try to help, but I've got to go right now.

Hopefully this helps.

- Jay


MacPro 5,1/12 core@3.46GHz -- OS X 10.15.7 -- ATI 7970 -- 32 Gig RAM -- Crucial 500GB OS SSD -- Samsung EVO 1TB Audio/Sample SSD -- BIAB 2024 -- Logic Pro X -- Cubase Elements 14 -- Too many plugins