The location of the hole (perforation) in the eardrum also effects the degree of hearing loss. If severe trauma (e.g. skull fracture) disrupts the bones in the middle ear which transmit sound or causes injury to the inner ear structures, the loss of hearing maybe quite severe.
1 Resting 1-3 minutes between sets is probably ideal for you. 2  The higher your training intensity is for a given exercise and/or the more demanding it is on your body, the more you should stay nearer to the 2-3 minute range.
Then rest again for 2-3 minutes before going back to benching. This is called alternating sets, and I've found it to be far more beneficial in regards to increasing strength than supersetting the agonist/antagonist movements. However, if you're short on time, you can still superset the movements.