I know this isn't the answer to the question, but it may help with a solution/workaround.

BiaB does generally honour slash chords as one would like, so generally one can use slash chords to coerce BiaB into producing a walking bass line.


Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
.