BBM. Not exactly. The Red Cross recommends you ask someone else to call 911 while you are attempting CPR, because presumably if you are doing CPR your hands are not free to call and you are occupied. Ross was not in the middle of performing CPR when he asked someone to call for him.
Isn't that what he did? While he was removing the baby from the car he shouted someone call 911?
Maybe I've missed the sequence of events.