I don’t think Fitzgerald has a connection with Sullivan. I don’t believe their time in Pittsburgh coincides with one another. Fitz came here with Shero in the summer of 2015, which is when Sullivan was hired in Pittsburgh, which was actually to replace John Hynes as the AHL Penguins head coach. Sullivan wound up taking the head coaching job a couple of months into that season when they fired the head coach they had. And he’s been head coach ever since.
There really are no coaches with championship pedigree much more recently than him who would be available.
Berube is the only more recent cup winning head coach than him who is currently out of work.
Trotz is no longer coaching and is now a GM, Cooper likely isn’t going anywhere and Bednar and Cassidy aren’t either. Berube is the only more recent cup winning coach than Sullivan who is currently out of work.
Before Sullivan it’s Quenneville (let him rot) and Sutter (effectively retired, last year in Calgary was a disaster) and before that the most recent cup winner goes all the way back Claude Julien before Q and Sutter alternated cup wins lol.