Eh, it varies man. Leg days typically take a long time especially when the rep ranges are 5 and below because I definitely like to take time in between each set to allow my nervous system to recoup. I’ve found this also allows me to “feel” my body better and keeps me from pushing through pain. If something hurts, I stop. Plus I’ve gotten a lot better and smarter about the way I warm up for squats. I’m tired of being injured all the time and using that as an excuse, and I’m finally at a point where I’m not really hurting anywhere, so I’m just trying to take a smarter approach to lifting heavy. Chest days and shoulder days really don’t take forever, maybe an hour and 10 minutes if I’m hitting more secondary movements.
Back days where I’m in low rep ranges can take the longest because I definitely take awhile in between sets to just chill. My lower back has suffered for a long time and the reverse hyper machine has helped me “fix” my bulging discs, but I also and going slower now and am more deliberate with my form and making sure each rep is a pretty one.