My daughter wants me to speak to her boyfriend's father but I think I would be overstepping

My daughter is 16 and her boyfriend is 15. They've been together almost a year. He's a sweet kid, his dad is just a little overprotective. He's only allowed over a few friends houses. It used to be my daughter could only come over to his house. He just recently started letting him over our home. He has a very early curfew. He needs to be home by 6pm since it gets dark earlier now. Towards the summer his curfew is at 8 as long as his tracker is on. Her boyfriend's mom died when he was 3 and that's when his dad got custody of him. I found out the reason his dad is so overprotective is because his dad was abducted when he was younger on his paper route because he used to be a paper boy. He said he went through abuse that he never wants his child to go through so I understand. My daughter really wants to go to a concert with her boyfriend but he can't because it's past curfew. She really wants me to talk to his dad for him. I feel like I would be overstepping. Maybe I could agree to go with them to make him feel better but I still think it would overstepping and it's not my place