So in ANGEL 17 Gunn was in a coma, badly beaten, possibly dying.
But in ANGEL 18, he's up and about and driving and has Illyria riding shotgun.
How did this happen? Well, here are Franco's pencils and inks for the cover of issue 23, which will shed a little light:

Faithful readers can probably tell just who is standing over Gunn. And yes, that person (?) does in fact have a hand in his speedy recovery. But I can tell you that physical healing is only the tip of the iceberg in this issue. This one is packed with big shake-ups. We see a couple of reunions, some fun cameos, characters charting new journeys, and Franco and I tell a little tale that serves as a wonderful capper to the AFTER THE FALL storyline. In fact, if ATF is ever collected in one volume, I hope this is the last chapter in the book.
Hope you enjoy the sneak peek!