Operating hours of Ngong Ping, Hong Hong

It will be my first time to go to NP. I will be arriving at tung chung in around 4:00 pm. Just to clarify, the 10:00 am - 6:00 pm weekday operating hours is for the cable car only? Meaning i can buy a one way ticket using the cable car and still take the bus down past 6 pm? Or arriving that late would be a waste of time? Thank you.