0ni
Registered Rustler
Why the hell would it hinder it? Cleans are commonly used as dynamic assistance work for deadlifts. Pressing is assistance for bench. The clean and press is two birds with one stone. Furthermore for non-powerlifters the clean and press is a staple because it is as close to full-body strength exercise as you are going to get. Its less technical than the jerk or snatch and more based on speed and brute force.
Yeah you're 100% correct, clean + pressing less than 40% of your deadlift will have a great effect on the speed of your pulls and won't add unnecessary volume whatsoever! Bench press and deadlifts are two separate exercises and should be trained separately otherwise you're just training to increase your C+P