No worries, and same. I may’ve misread/been defensive myself, sorryApologies if my post came off snarky. I'm actually interested in jazz guitar in terms of gaining insight into improvising so that was the impetus behind my questions. It sounds like a good book, but probably to advanced for me. I still need a year or more with guitar/music fundamentals.
To answer your question, yeah... I think my improvisation is better, though it hasn’t really been my aim, let alone something I've worked on like rhythm. I've traded ii V Is with my teacher and watched him sort of smile and tell me what he liked and so forth, so I guess I'm fair at it? I try something non-jazz from 'twanger central' every few months and I'm at least better than I was, but it's something I need to spend regular time developing. Interested in the swing styles as ever... Junior Barnard, Eldon again. I am definitely still crawling in that respect.
The book really doesn't get to soloing at least in its first half. But it did help my improv in the way its exercises drill varied movement of voicings until they became familiar to my ear. Learning to hear where a given chord/extension sounds great, etc. At a minimum it got me physically used to some new chords and cleverer ways to move around the fretboard and that also helps with soloing, at least for me.