I explain better the difference between the 2 routings
The first routing only serves to experiment because it doesn’t record changes!
In this routing, the 1st Scaler feeds chords directly (Performance option inactivated), while the 2nd Scaler feeds rhythms & arpeggios (Performance option activated) passing through MIDI Polysher and a MIDI track required to re-feed AAS Strum GS 2
With this routing I set a fixed series of chords with the 1st Scaler, then I set both Scalers in sync & loop, then I use MIDI Polysher to move note ranges up and down, and I also use patterns, voice groupings, etc. hearing what happens; as far as I hear something interesting I save the situation in a new Ableton project, also recording all tracks (all armed)
If I export the audio file with this routing, the output is wrong because just the LAST pattern, voice grouping etc. used passes into the audio!
The following step involves a different routing
N.B. I cannot use this 2nd routing for both steps because the 2nd Scaler must be inactivated to record changes AFAIK
The AAS Strum GS 2 Guitar option is amazing for
guitarists like me, because it’s like having my 2 real hands on, but 2 skilled hands!

My left hand selects chords, while my right hand plucks the strings to do rhythms & arpeggios
The 1st Scaler (left hand) feeds chords directly to AAS Strum GS 2, the 2nd Scaler is inactivated, and the right hand comes from the MIDI track whose MIDI was recorded in the 1st step
This way I have all 7 Voice Groupings that build 7 different rhythms & arpeggios