I would put more faith in the words of experienced Octatrack users than the documentation.
On Pickup you can put Recorder Trigs…it’s something =)
You can duck Pickup using its LFO to VOL.
On Neibor only the TrkLevel can control the actual volume.
It’s about architecture…don’t get mad…!
I used to damn all the saints in some moments…but OT is my fav piece of gear.
Also Neibor is derived from MM and doesn’t provide multiple sources feeding.,…just neighboring… 