I listened to a very good recording of the second Chicago show throughout work today, and I have to say it's like night and day compared to first few shows.
The band sounds very tight and punchy, with Nic especially on his A Game. Tempos, transitions, changes are all ironed out and sound much more deliberate and focused.
Phil is in far better shape vocally; he actually sustained notes and put some power behind his delivery, particularly "Afterglow," the runs on "Misunderstanding," and "I Can't Dance." The backing vocalists didn't seem to be covering so much as embellishing the sound. I did miss "Duchess" (though it appears to have returned to the set), but "Misunderstanding" was a great version. His enunciation seems to have improved as well.