I'm not sure that qualifies as slowly.I've done a no-chill batch that took 24 hours.
Hops added later than 30 minutes will be affected by slow chilling but not a 60 minute addition as all of the possible hop oils have pretty much isomerized by then. It's the 15 minute to flameout hops I would worry about. Read the recipes well before you try the no-chill.
I’m just backing the point of not needing a wort chiller... although I do find them intriguing. I’m new to all of this, so don’t crucify me...lol