6-day dual-body-part split taking 2-2.5 hrs, help me make it more effective

Hey all, looking for help optimising my workout program.

I'm 6'3 and 80kg. I train 6 days/week when possible (if I miss a day, I carry it forward rather than skipping). My sessions currently run 2-2.5 hours, and I've had multiple people tell me I'm doing too much per day.

My split (repeats, rest day when needed):

Chest & Triceps

Barbell flat bench press
Incline dumbbell press
Cable fly (high-to-low)
Cable fly (low-to-high)
Skull crushers
Single-arm cable pushdown
Rope pushdown

Back & Biceps

Deadlift
Barbell bent-over row
Lat pulldown
Mid-back / seated row
Hammer curl
Barbell curl
Preacher curl

Legs & Shoulders

Barbell squat
Leg press
Lunges
Leg curl
Calf raises
Dumbbell shoulder press
Lateral raise
Face pull

I've received feedback that this many exercises per day is too much. I want to continue with this dual-body-part split since recovery happens within 48 hours.

1. Which exercises are redundant or low-ROI and should be cut or swapped for something better for hypertrophy? I'm not well-versed in which movements hit which muscles, so I'd appreciate help spotting the overlap.

2. How many working sets per muscle per session should I actually aim for?

Thanks!